Displacement Definition and 999 Threads

The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, metric tonnes are more commonly used.
Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below.
Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage.

View More On Wikipedia.org
Recent contents Top users
  1. G

    How Do I Solve Double Displacement Reactions for Chemistry Homework?

    I am so stressed right now and am on the verge of a nervous breakdown. My chemistry homework is just really confusing and I need to pass this class, could someone please help me out? I need to hand this in tomorrow and I have already answered the questions myself but I feel like my answers are...
  2. C

    Magnetic field due to displacement current and Ampere's law

    I have a doubt on this calculation of magnetic field in presence of displacement current. Consider a capacitor of radius ##R## and with plates at distance ##d## being charged: there is a displacement current in it. Suppose that I want to calculate the magnetic field ##B## at a distance ##r <...
  3. P

    I How Do You Calculate Vertical Displacement from Experimental Data with Noise?

    I'm doing a program for the simulation of some experimental data. The data is recorded by a device and that the register are the: - acceleration components along the (x, y, z), - time (starting from 0, and change of each recording Delta t), - orientation (azimuth, roll, pitch). My goal is to be...
  4. W

    I Variable displacement hydraulic pumps

    In online examples of variable displacement systems with swash-plate pumps, the input pump & motor are usually of equal size. When the constant RPM input pump is at full tilt (max displacement) the fixed displacement motor is at the same RPM for a 1:1 ratio, and when the pump is at no tilt (no...
  5. A

    The longitudinal displacement of sound wave

    Homework Statement The longitudinal displacement of a mass element in a medium as a sound wave passes through it is given by s = sm cos (kx – ωt). Consider a sound wave of frequency 330 Hz and wavelength 0.95 m. If sm= 16 µm, what is the displacement of an element of air located at x = 1.1 m...
  6. Muhammad Khalid Khan

    Total displacement using vector diagram

    A car is driven eastward for a distance of 50 miles, then northward for 30 miles, and then in a direction 30 degree east of north for 25 miles. Draw the vector diagram and determine the total displacement of the car from its starting point. The relevant equations I used here are: i) rx= ax +...
  7. S

    Calculate the torque, total displacement volume, when stroke and bore are equal

    Homework Statement A six-cylinder four-stroke internal combustion engine, running at 2,200 rpm, outputs 120 kW of brake power. The stroke is equal to the bore. The brake mean effective pressure is 5.5 MPa. Calculate the torque, total displacement volume, stroke and bore. Homework Equations...
  8. karush

    MHB 205.o6.03 Find the body's displacement and average velocity

    $\tiny{205.o6.03}$ $\textsf{A body on a coordinate line such that it has a position}\\$ $\textsf{$\displaystyle s=f(t)=\frac{16}{t^2}-\frac{4}{t}$ on the interval $\displaystyle 1\le t \le 4$ with $s$ in meters and $t$ in seconds }$ $\textsf{a. Find the body's displacement and average vellocity...
  9. Paul Nefdt

    B G-Force Displacement -- Is it possible?

    Hi Guys I was wondering if the effects of G-Forces can be displaced?? e.g if a body or object is placed in water (more like encapsulated in water) & is then subjected to tremendous acceleration very quickly, would there still be a G-Force effect on the object inside the water?
  10. P

    What is the role of displacement currents in a circuit?

    Please help me with this. I am having a hard time understanding the role of displacement currents in a circus. The common knowledge is actual current is the movement of electron in a circus. Now, if there is a gap and an AC source, there would be an electric displacement field and a displacement...
  11. M

    MHB Velocity , Displacement problems regarding a rabbit and hawk

    Here an image on what is going to happen (Sweating) A hawk starts it's flight instantly from rest. It flew 5 seconds with uniform acceleration of 4.8 $ms^2$ and maintained its velocity for 3 seconds until it reached the prey in linear path i. Find the velocity of the hawk in the first 5...
  12. Z

    Displacement and Pressure in acoustics

    So my question deals with open-open tubes. When there is a displacement antinode there is a pressure node. I can somewhat conceptualize this because of the boundary condition where the pressure at the ends needs to be atmospheric. But I am confused about the ideal gas laws relation to this...
  13. Vanessa Avila

    Finding time of how long the block travels (SHM)

    Homework Statement A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the amplitude of the motion is 0.090 m , it takes the block 2.52 sto travel from x= 0.090 m to x= -0.090 m . If the amplitude is doubled, to 0.180 m , how long does...
  14. Vanessa Avila

    Simple Harmonic Motion: Finding displacement at given time t

    Homework Statement A 1.10 kg mass on a spring has displacement as a function of time given by the equation x(t)=(7.40cm)cos[(4.16rad/s)t−2.42rad]. Find the position of the mass at t=1.00s; Homework Equations x = Acos(ωt+∅) The Attempt at a Solution I tried to just plug in the time t in that...
  15. T

    Kinematics problems: Displacement in Moon & Proportionality

    Homework Statement An astronaut on the moon throws a stone horizontally with a speed V0. If the acceleration due to gravity on the moon is 1⁄6 that of the Earth, by what factor will the horizontal distance traveled by the stone, d, change? Answer Options: 2 2.44 1.20 36 6Homework...
  16. Z

    Amplitude of Piston in Horizontal Cylinder

    consider horizontal cylinder in which piston is performing simple harmonic motion.Is the amplitude of piston is equal to displacement amplitude of elemnts pf medium i.e air in the cylinder.
  17. N

    Finding Initial Block Position and Maximum Speed of Oscillation

    1. The problem statement, all variables and given/known On a very smooth horizontal table, a block of mass m=0.75 kg is attached to an ideal spring with a spring constant k= 242 N/m. The origin of the horizontal coordinate (x=0) is set at the equilibrium position of the block. The block is...
  18. wheels94

    Projectile Motion - vertical displacement at specific time.

    Homework Statement A kicker wishes to kick a field goal, so he sets the ball on the ground 30 yards (27m) from the goal. Assuming he kicks the ball at an angle of 45 degrees and a speed of 27m/s, what is the height of the ball above the ground when it goes over the crossbar. Known: R = 27m Vo...
  19. Vitani11

    Harmonic oscillation displacement

    Homework Statement ...when she pulls the ball down 2.5cm from equilibrium and releases it from rest, it oscillates at 5.5 Hz. What is displacement y as functions of t? Homework Equations Y= Acos(omega t+phi) The Attempt at a Solution I'm almost certain I should instead be using sin to...
  20. G

    I Wave Equation & Wave Displacement Invariance: Modern Physics

    This question concerns a section from the book Modern Physics by James Rohlf. http://srv3.imgonline.com.ua/result_img/imgonline-com-ua-twotoone-Bs4zgy7pruqG.png He shows that the form of the Wave equation for light remains invariant under a Lorentz boost (4.42)...
  21. S

    Algebra of displacement operator

    Homework Statement Given an operator ##D(\alpha)=\exp\ (\alpha a^{\dagger}-\alpha^{*}a)## and a function ##g(a,a^{\dagger})##, where ##a## and ##a^{\dagger}## are operators and ##\alpha## and ##\alpha^{*}## are complex numbers, show that ##D^{-1}(\alpha)g(a,a^{\dagger})D(\alpha)=g(a+\alpha...
  22. U

    Velocity, Acceleration and Displacement time graphs.

    Homework Statement Sketch velocity vs time, acceleration vs time and displacement vs time graphs describing the following motions.a) An object begins at rest and accelerates at a constant rate to a velocity of 5.0 m/s [E]. The object continues along at this velocity. b) A car...
  23. Iron_Man_123

    Vector math for a cyclist: displacement, average velocity and acceleration

    Homework Statement Homework Equations N/A The Attempt at a Solution [/B]
  24. weezy

    Calculating displacement current and magnetic field.

    1. The problem statement, A capacitor is there in free space consisting of 2 circular plates of radius ##r## separated by a distance ##z## which is a function of time. ##z(t) = z_0 + z_1 cos (\omega t)##; ##z_0(<<r)## and ##z_1(<z_0)## are constants. The separation ##z(t)## is varied in such a...
  25. GiantSheeps

    What can you predict given acceleration and initial velocity

    Homework Statement If you know the acceleration of a car and its initial velocity, you can predict which of the following? A. The direction of the car's initial velocity B. The magnitude of the car's final velocity C. The displacement of the car D. All of the above Homework Equations I said...
  26. L

    Ball trajectory velocity and displacement vectors

    Homework Statement ball is thrown at slighta angle upwards and to the right. Angle between horizontal and the launch velocity vector is 35deg upwards. Launch velocity vector (v_0) has magnitude of 12m/s Only gravity affects the ball as a force. (no air resistance) t_0 = 0 secs t_1 = 0.2 secs...
  27. S

    A Displacement graph of an orbiting body

    If I were to draw a displacement time graph of an arm rotating around it's origin at a constant radius meaning it is a constant displacement from the origin. Meaning the graph looks the same as one of an item that is not moving,how would you draw the displacement time graph of something moving...
  28. N

    Does displacement=shortest length of position (final-initial)?

    Homework Statement if displacement is the shortest distance between two point then that would also meant that it is equivalent to the hypotenuse when using phytogaras theorem right?. but why isn't displacement the shortest length between two point ?because Xinitial - Xfinal couldn't posibly be...
  29. kuruman

    Acceleration at maximum displacement

    A common student misconception is that when a ball is thrown straight up in the air, at the point of maximum height, where the velocity is zero, the acceleration is also zero. This can easily be dispelled by observing that, if indeed the acceleration were zero when the velocity is zero, the...
  30. R

    Displacement given position function at time t

    Homework Statement The position function of a projectile is given by r(t) = (5t + 6t2) m I + (30 - t3) m j. What is the displacement of the particle in magnitude angle form at the = 2.0 seconds. Homework Equations √x2+y2 tan-1 = y/x Possibly: x = v0t + 1/2at2The Attempt at a Solution [/B] I...
  31. Amru123

    B Force directly proportional to negative of displacement?

    I don't seem to understand this formula. How there should a negative sign before the displacement.Can anyone help me out?
  32. V

    Calculating Acceleration, Displacement for 100m Sprint

    Homework Statement In a 100 m sprint a runner starts from rest and accelerate to 9.6 m/s [W] in 4.2 s. Calculate acceleration, displacement, and if the runner runs at a constant velocity for the rest of the race what is the total time? Homework EquationsThe Attempt at a Solution I am having...
  33. DarkBabylon

    I Quick question about explosions and displacement

    Understanding waves typically don't displace atoms but momentarily and then they move back into place, my intuition tells me that if a pressure wave on a certain gas meets a slightly different gas but with a similar density, the different gas wouldn't move dramatically due to the pressure wave...
  34. donaldparida

    Work calculated for a force not producing displacement?

    If a force acting on an object displaces the object, then why do we calculate the work done by all the forces acting on the body (those which did not cause the body to move as well as the force which caused the body to move) instead of the work done only by the force responsible for the...
  35. Riju

    Kinematics Question on falling rock

    Homework Statement A rock is thrown straight upward from the edge of a 30m cliff, rising 10m, then falling all the way down the base of the cliff.Homework EquationsThe Attempt at a Solution Well, because the rock was thrown 10m up, and then it came all the way down, I added those quantities...
  36. O

    Finding displacement using net work?

    Homework Statement The question is: A 2 kg particle is moving in the positive x direction with the speed of 5 m/s. As it passes the origin, a force F = (30 N - 2N/s*t)i is applied to it. Where does the particle come to a stop? Homework Equations F=ma W = integral F(x)dx K=.5mv^2 The Attempt...
  37. J

    A Can Buoyancy Create Free Energy?

    Hello, I've search for a while on these threads, and its difficult to find the answers that I'm looking for. I know perpetual energy machines are banned from topic, but closely related is the idea of free energy. Is free energy (or close to it) allowed to be a topic of conversation? Why not if...
  38. S

    Exercise about the wavefunction

    Homework Statement [/B] Consider an ideal rope where there is a wave moving at velocity ##v=20 m/s##. The displacement of one end of the rope is given by $$s(t)=0.1 \mathrm{sin}(6 t)$$ a) Find the wavefunction ##\xi(x,t)##, knowing that it is progressive b) Find the distance ##\delta## (in...
  39. RubiksMelia

    Constant of Integration when calculating displacement

    Homework Statement The speed of a pendulum bob moving in simple harmonic motion is given by v = 1.26sin(2πt) where v is in m/s and t is time in seconds. Homework Equations s = ∫ v dt The Attempt at a Solution v = 1.26sin(2πt) Integrating v yields s = -0.2cos(2πt) + c and solving for c...
  40. Saracen Rue

    B Finding velocity in terms of displacement

    I know two methods as to how to do this, but one of them doesn't seem to work. Say you're given x = 3t^2 + 6t - 4. If you treat x as an unknown variable and movie it over to the other side, you can use completing the square to solve for t. This eventually gets you: t = 1/3*sqrt(3(x+7)) - 1 Then...
  41. P

    Resultant Displacement with direction problem

    Homework Statement You run towards the west with a velocity of 4 m/s for 5 minutes. You then continue running to the northeast (halfway between north and east) at 2 m/s for 8 minutes. (a) At the end of the 13 minute run , what was your total running distance? (b) At the end of the 13 minute...
  42. G

    Correlating Displacement and Strain in a Cantilever Beam System

    Hi, Well i have a system with a excited (in y axis) cantilever beam. I struggling to obtain a expression that gives the strain based on the dislocation y. I know that the displacement of the beam is given by: Ya=PL^3/(3EI) but how i make a correlation between this and the strain of the...
  43. Narayanan KR

    Electrolysis using Displacement current?

    The figure shows two insulated metal electrodes kept in pure water with a small gap between them. When sufficiently large voltage pulses applied between electrodes, there is a flow of displacement current through the insulators and water, but will this split the water molecules because of the...
  44. A

    I Quantum entanglement and parallel displacement

    Suppose we fire two entangled particles in a tour round-flight around the galaxy and measure their spins using two Stern-Gerlach devices after returning back to the earth. Will the correlation between their spin measurement still obey quantum correlation? According to General Relativity...
  45. J

    Physics displacement velocity mass elastic/inelastic help

    NO TEMPLATE BECAUSE THREAD WAS STARTED IN WRONG FORUM A wrecking ball is a heavy steel ball, usually hung from a crane that is used for demolishing large buildings. Suppose we had a crane with a wrecking ball with a mass of m1 = 12,000 lbs. The crane produces a displacement on the ball of a...
  46. gsmtiger18

    Displacement current and magnetic flux through a wire loop

    Homework Statement A long straight wire has a line charge, λ that varies in time according to: λ = λ0e(-βt). A square loop of dimension, a, is adjacent to the wire (at a distance a away from the wire). Calculate expressions for the displacement current at the center of the wire loop and the...
  47. T

    Final speed with mass, initial velocity, force, displacement

    Homework Statement A 1000kg car is moving at 25ms when a net force of 200N acts to slow the car. This force acts while the car moves through a distance of 300m. Find the new speed. Homework Equations Kinetic Energy equation v2=u2+2as The Attempt at a Solution Attempted the use of Kinetic...
  48. P

    Work & Displacement: Scalar vs Vector

    Work = force x displacement, so if there is zero displacement, the work is zero, right? But if I get up and walk across the room and walk back again to my starting place, the net displacement is zero, however I am told that there is still work performed. The explanation given for this is that...
  49. karush

    MHB Velocity and displacement and distance

    Assume $t$ is time measured in seconds and velocities have units of $m/s$ $$s\left(t\right)=-{t}^{2}+5t-4 \ \ \ 0\le t \le 5 $$ $$v\left(t\right)=-2t+5$$ a. Graph the velocity function over the given interval. Then determine when the motion is in the positive direction and when it is the...
  50. T

    Can a Swash Plate Mechanism be Adapted for Radial Displacement Along a Spoke?

    This is a hard one to describe and I couldn't think of a better tittle, sorry. My aim has been for a while to create a mechanism which allows me to move an object (i.e a washer or something) in or out radially along a spoke of a wheel. However I have some restrictions which have made me scrap...
Back
Top