Homework Statement
Hi everyone, I am generalizing the following problem because I disagree with how the book solves the problem.
A square mass 'm' is attached to two springs with identical constants 'k', in a configuration such that the springs mount to the left/right sides of the...
Homework Statement
Answer the following question for a mass that is hanging on a spring and oscillating up and down with simple harmonic motion.
Homework Equations
Where in the motion is the magnitude of the force from the spring on the mass a maximum?
The Attempt at a Solution
I...
I am sorry if I am doing anything wrong. I'm new to this site and physics in general. Please feel free to correct me if I'm making some stupid mistake in formatting.
1. The first figure gives spring force Fx versus position x for the spring–block arrangement of the second figure. The scale...
Homework Statement
Two identical ideal massless springs have unstretched lengths of 0.25m and spring constants of 200N/m. The springs are attached to a small cube and stretched to a length L of 0.32m. One spring on the left and one on the right. An external force P pulls the cube a distance of...
1.A mass is attached to a vertical spring, which then goes into oscillation.
At the high point of the oscillation, the spring is in the
original unstretched equilibrium position it had before the mass
was attached; the low point is 5.8 cm below this. Find the oscillation
period...
The 20-kg sphere, attached to a spring of stiffness 500 N/m
is released from an un-stretched position of the spring, as
shown in the figure. Determine the velocity of the
block “A” of mass 10 kg, at the instant the ball has fallen
25 cm. A roller mechanism keeps the spring in a vertical...
Homework Statement
The diagram shows a potato launcher before the spring is compressed and used to launch a potato. A force of 65 N is required to compress the spring 5 cm. The spring will be compressed 10 cm before the potato is inserted. The inside of the tube and the potato skin have a...
1. A block of mass 0.247 kg is placed on top of a light, vertical spring of force constant 5 050 N/m and pushed downward so that the spring is compressed by 0.109 m. After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of...
I need to determine the correct diameter and length of a combination of 4 extension springs to use in a projectile device. The springs must be able to extend to approx 3ft, and generate enough force to propel a set of objects that are 3ft in length and have an overall weight of approx 5lbs. The...
Homework Statement
The spring in the figure has a spring constant of 1400N/m . It is compressed 16.0cm , then launches a 200g block. The horizontal surface is frictionless, but the block's coefficient of kinetic friction on the incline is 0.210.
FIGURE ATTACHED
What distance d does the...
Homework Statement
A spring has a relaxed length of 0.17 m, and its stiffness is 15 N/m. The spring sits vertically on a table. You place a block of mass 0.058 kg on the spring and push down on the block until the spring is only 0.11 m long. You hold the block motionless on the compressed...
Hey guys, how are you?
I feel so stupid right now, I'm having a hard time getting my mind straight, which of the two resultant force diagram on the right is right? Typically its a slider with a ball and spring that slides on a recess (cam type). I want to know the force required on the slider...
Homework Statement
A spring is hung vertically from a support. A mass of 4.5 kg is hung from the lower end of the spring and is slowly lowered a distance of 22.0 cm until equilibrium is reached. This mass is then lowered to a point 15.0 cm below the equilibrium point and is then released...
Homework Statement
To test the resiliency of its bumper during low-speed collisions, a 4 600-kg automobile is driven into a brick wall. The car's bumper behaves like a spring with a force constant 8.00 106 N/m and compresses 3.36 cm as the car is brought to rest. What was the speed of the...
Homework Statement
A spring with spring constant 35N/m is attached to the ceiling, and a radius=0.025m, 1.0kg metal cylinder is attached to the lower end. The cylinder is held so that the spring is neither stretched nor compressed, then a tank of water is placed under-neath with the surface of...
Homework Statement
Consider the system below. The 2.50 kg mass compresses the spring (k = 805 N/m) a distance of 0.230 m from equilibrium. The mass is then released from rest. It slides a total distance of 1.20 m on the table top where it feels a force of kinetic friction of 5.60 N before it...
If you've got a spring, one end pinned up the y axis, and a particle constrained to move along the x axis, but attatched to the other end of the spring, does it have any idea how far up the y-axis the spring is fixed?
Homework Statement
Assume the spring force of a bowstring acting on an arrow does not follow Hooke’s Law because the bow’s material becomes more rigid as it is drawn back. The string’s force as a function of the drawback distance in meters is:
F(x) = -k1x -k2x|x|
where positive x is along...
Okay so we have a block attached to a spring with a spring constant of 50 N/m. The spring is in the relaxed state.
We apply a force 3N along the positive x direction. The block moves along the x axis,stretching the spring until the block finally stops.
What is the block's displacement?
When the...
I'm reviewing a concept on a system where a mass is hanging from a vertical spring in the presence of gravity. I'm attempting to validate my understanding of conservation of energy when the mass is allowed to slowly extend from its unstretched point to its equilibrium point where the forces...
Homework Statement
A 2.0-kg mass (m1) and a 3.0-kg mass (m2) are on a horizontal, frictionless surface, connected by a massless spring with spring constant k = 140 N/m. A 15-N force (F) is app0lied to the larger mass, m2, as shown in the figure:
|__m1__|-/-/-/-/-|____m2____| ----------> F...
The only force acting on a 2.9 kg body as it moves along the positive x-axis has an x component Fx = - 6x N, where x is in meters. The velocity of the body at x = 3.0 m is 8.0 m/s.
What is the velocity of the body at x=4?
At what positive value of x will the body have a velocity of 5 m/s...
A multi plate clutch has 4 frictional surfaces, imternal diameter 120mm and external diameter 200mm. The coefficent of friction is 0.3
What spring force will be required to transmit 20KW of power at 1440 RPM if the clutch is under uniform pressure conditions?
Homework Statement
A massless spring of constant k=78.4 N/m is fixed on the left side of a level track. A block of mass m=0.50-kg is pressed against the spring and compresses it a distance d from equalibrium position B to a compressed position A. The block, initially at rest, is then released...
Homework Statement
A 0.30 kg ladle sliding on a horizontal frictionless surface is attached to one end of a horizontal spring with k = 500 N/m, whose other end is fixed. The ladle has a kinetic energy of 10 J as it passes it equilibrium position (the point at which the spring force is zero)...
Homework Statement
A 100g object is suspended from a spring. When 40g are added, the spring stretches an additional 5.0cm. With the total mass of 140g, the spring is set into vertical oscillations with an amplitude of 10 cm. (a) What is the force constant of the spring?
Homework...
A .50 kg block sliding on horizontal frictionless surface is attached to one end of a horizontal spring (with k = 500 N/M) whose other end is fixed. The block has a kinetic energy of 20J as it pass through its equilibrium position (the point at which the spring force is zero.)
what is the speed...
Hi :D
1) Two equal masses (let a and b) are attached to the ends of a spring of spring constant k. The masses are pulled out symmetrically to stretch the spring by a length x over its natural length. The work done by the spring force on each mass is :
(a)1/2kx2 (b)-1/2kx2 (C) 1/4kx2 (d) -1/4kx2...
Homework Statement
A 2.1 kg mass is connected to a spring with spring constant k=150 N/m and unstretched length 0.18 m. The pair are mounted on a frictionless air table, with the free end of the spring attached to a frictionless pivot. The mass is set into circular motion at 1.4 m/s. Find...
Homework Statement
In the figure the block starts from rest at A, slides down the ramp, compresses the spring 0.75 meters, and goes back. The spring constant is 520 N/m, the block's mass is 12 kg, and the ramp is inclined at 30°. The horizontal part of the sliding is frictionless. If point A...
[b]1. we must apply a force of magnitude 78 N to hold the block stationary at x = -2.0 cm. From that position we then slowly move the block so that our force does +4.0 J of work on the spring-block system; the block is then again stationary. What is the block's position (x)? (There are two...
I have some basic question about spring force. The anchor position for spring is its equlibrium position. As the spring is stretched, when released, it is expected that it should come back to its equilibrim position. But I found when less force is applied, the new equilibrium position is a bit...
When thre is a spring attatched to a certain body (like take the example of the suspensions/shock absorbers of an automobile) and a force is applied through that spring.
The automobile suspensions can be the best eamle for this discussion. We say that the force generated (which we experience...
If I apply the Work-Kinetic Energy theorem to a situation in which an object is lifted or lowered then I can form the equation K(f)-K(i)=W(net)=W(applied)+W(gravity)
This equation shows that if K(f)=K(i) then the above equation reduces to:
W(applied)= -W(gravity)
Now in the situation in...
A horizontal spring with stiffness 0.7 N/m has a relaxed length of 18 cm (0.18 m). A mass of 17 grams (0.017 kg) is attached and you stretch the spring to a total length of 21 cm (0.21 m). The mass is then released from rest. What is the speed of the mass at the moment when the spring returns to...
Homework Statement
A light spring having a force constant of 125 N/m is used to pull a 9.50 kg sled on a horizontal ice rink. The coefficient of kinetic friction between the sled and the ice is 0.200. The sled has an acceleration of 2.00 m/s^2. By how much does the spring stretch if it pulls on...
Homework Statement
http://img682.imageshack.us/img682/8177/f141.jpg http://g.imageshack.us/img682/f141.jpg/1/
If the block is subjected to a force of = 500 , determine its velocity when = 0.6 . When = 0, the block is at rest and the spring is uncompressed. The contact surface is smooth...
Homework Statement
A bungee jumper of mass m=70 kg is riding a bungee cord with spring constant k=50 N/m. Its unstretched length is L=9.0 m. What is the amplitude of the jumper's oscillation?
m=70 kg
k=50 N/m
L=9 mHomework Equations
mg(L+x)=(1/2)kx^2
x(t)=Bcos(omega(t)+alpha)
omega =...
A 1.54-kg block is held against a spring of force constant 1.47E+4 N/m, compressing it a distance of 0.100 m. How fast is the block moving after it is released and the spring pushes it away?
i thought u just use the formulas that F=kx and then plug that into F=ma, but i am not getting the...
I'm struggling to get my mind around this concept:
If you have a spring with a known spring constant, and you put a specific mass on it, compress it a certain distance and then release it, can you predict the distance it will travel with the information supplied?
Or in other words, can I...
1. As a 1.7×104 jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. The cable is attached to a spring with spring constant 6.0×104 . If the spring stretches 31 to stop the plane, what was the plane's landing speed? (Answer in m/s)
2. Homework Equations...
Homework Statement
http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c07/pict_7_36.gif
gives spring force Fx versus position x for the spring–block arrangement
http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c07/pict_7_11.gif
The scale is set by Fs = 160 N. We...
Homework Statement
The block has mass m. A spring (with spring constant k and equilibrium length b) is
attached to the block at the point x. The free end
of the spring is at the point xb. We move the free end of the spring with a constant
velocity u. The static and dynamic coefficients...
1. Problem
In the figure, we must apply a force of magnitude 63 N to hold the block stationary at x = -2.0 cm. From that position we then slowly move the block so that our force does +4.1 J of work on the spring-block system; the block is then again stationary. What is the block's position (x)...
Homework Statement
The ends of two identical springs are connected. Their unstretched lengths l are negligibly small and each has spring constant k. After being connected, both springs are stretched an amount L and their free ends are anchored at y=0 and x= (plus minus)L as shown (Intro 1...
I'm trying to work out the force transfer along a torsional spring. Using Hooke's law, the opposing force from applying a force to the torsional spring can be calculated using
\textbf{F} = -\textit{K}\vartheta
with theta representing the angular deflection from its equilibrium position and...
I want to calculate the electrical parameters of solenoid coil of a valve for a given spring force.
I know the force required to pull the solenoid plunger through a given distance against a spring, is there any formula to find out the required voltage, number of turns of coil winding & current .
A 220 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 2.8 N/cm (Fig. 7-30). The block becomes attached to the spring and compresses the spring 11 cm before momentarily stopping.
(a) While the spring is being compressed, what work is done on the block by...
Homework Statement
One end of a spring is attached to a block and the other is attached to a wall. The spring has no mass and the block lies atop a frictionless surface. The equilibrium point of the system is at x = 0 cm. A force of 80N must be applied to the block to hold it stationary at x =...