Simple harmonic motion Definition and 917 Threads

An 85.0 kg person steps into a car of mass 2400 kg, causing it to sink 2.35 cm on its springs. If started into vertical oscillation, and assuming no damping, at what frequency will the car and passenger vibrate on these springs? w= Sqrt (k/m), mg=kx, perhaps? The way I treated the...

Homework Statement A 0.50 kg particle executes linear harmonic motion about the point x = 0.0. At t= 1.0, it has a displacement x = 0.50m and a speed of 5.0 m/s to the right. The frequency of the motion is 2Hz. Determine (a) the spring constant, (b) the amplitude of the motion, (c) the...

In Simple harmonic motion: Acceleration = -W^2 x (W being omega, rads per sec. and x beind displacement (distance if you will) ) Omega is a constant but why is acceleration proportional to the NEGATIVE displacement, in other words, why MINUS?? Help appreciated. Thanks in advance!

Homework Statement A particle of mass m begins at rest from x = +24 cm and oscillates about its equilibrium position at x = 0 with a period of 1.4 s. Write expressions for the following. (Enter your numerical values to two decimal places.) (a) the position x as a function of t I solved...

Homework Statement The position of a particle is given by x = 4.6 cos (pi)t, where x is in meters and t is in seconds. (a) Find the maximum speed and maximum acceleration of the particle. I've already solved these by finding the first and second derivatives of the above x. v =...

Homework Statement A small bock that has a mass equal to M rest on a piston that is vibrating vertically with simply harmonic motion described by the formula y = Asin(wt) a) Show that the block will leave the piston if w2A > g. b) If w2A = 3g and A = 15 cm, at what time will the block...

A body with SHM has a velocity of 1.3 m/s at a distance of 1.0m from the mean position, and a velocity of 1.0 m/s at a distance of 1.3m from the mean position. Find: a) The amplitude of the motion. b) The velocity of the mid-position. c) The time elapsed between the instants when the body...

Homework Statement Two 100g blocks are held 80 cm above a table. As shown in the figure, one of them is just touching a 80cm-long spring. The two blocks are released at the same time. The block on the left just hits the table at exactly the same instant as the block on the right first...

Is 1 cycle the same as 1 oscillation?

I am completely and totally lost... Homework Statement The motion of an object is simple harmonic with equation of motion x = (27.1 m) sin(16.0 t /s + 0.7). At what time after t = 0 will the displacement reach its first maximum (where velocity equals zero)? Homework Equations x = Asin(wt)

Simple Harmonic Motion .. an Object Attached to a Spring! Hi everybody :smile: .. I'm glad that i joined this forum so that i can help people and benefit at the same time :) .. i wanted to start with this problem right here ,, and hope that i get the hand from you :) it's a question I've...

Homework Statement The motion of an object is simple harmonic with equation of motion x = (27.1 m) sin(16.0 t /s + 0.7). At what time after t = 0 will the displacement reach its first maximum (where velocity equals zero)? Homework Equations (displacement)=Asin(freq.*t+phase) The...

Homework Statement Prove that there exists a number A>0 and \phi such that acos(ct)+bsin(ct)=Acos(ct-\phi). Homework Equations a,b,c are predermined constants where c>0. From this equation I can justify conclusions regarding the amplitude, frequency, and so forth of a simple harmonic...

A 2.1 g spider is dangling at the end of a silk thread. You can make the spider bounce up and down on the thread by tapping lightly on his feet with a pencil. You soon discover that you can give the spider the largest amplitude on his little bungee cord if you tap at a frequency of 0.8 Hz. What...

The Earth's acceleration due the gravity varies from 9.78 m/s2 at the equator to 9.83 m/s2 at the poles. A pendulum whose length is precisely 1.000 m can be used to measure g. Such a device is called a gravimeter. (a) How long do 100 oscillations take at the equator? (in sec) (b) How long...

An oscillator with a mass of 600 g and a period of 0.50 s has an amplitude that decreased by 2.0% during each complete oscillation. If the initial amplitude is 6 cm, what will be the amplitude after 25 oscillations? I should most likely be using T = 2pi*sqrt L/g, as well as the many...

A compact car has a mass of 1050 kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. (a) What is the spring constant of each spring if the empty car bounces up and down 2.0 times each second...

Homework Statement a body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x=5.0 sin (pi*(t) + pi/3). What is the velocity in m/s and acceleration in m/s^2 of the body at t=1.0s? Homework Equations x(t) = A cos...

Homework Statement A grandfather clock is constructed so that it has a simple pendulum that swings from one side to the other, a distance of 22.0 mm, in 1.00 s. What is the maximum speed of the pendulum bob? Use two different methods. First, assume SHM and use the relationship between...

Homework Statement A block of mass 0.678 kilograms is suspended from a spring with a spring constant of 28.6 Newtons per meter. When the block is at rest, it is located 1.44 meters above the floor. The block is then set into oscillation by being lifted to a height of 1.83 meters and...

Homework Statement A box is floating in a liquid. It is pushed down then released to oscillate. How do I determine the period of this oscillation? No idea where to go with this one. Homework Equations The Attempt at a Solution

Is it possible to see Newton's cradle in simple harmonic motion? Im thinking that the period is the same as a simple pendulum, if not how would I calculate this?

Homework Statement A car uniformly accelerates. Show an open door that slams shut will do so in simple harmonic motion.Homework Equations The Attempt at a Solution This seems more conceptual than mathematical. I considered using T = Ia but the problem is the torque would act on the pivot (point...

Homework Statement Mass m moves along a line on a rough table and is attached on either side to a stretched spring (both have equal spring constants k). The coefficients of static and sliding friction between mass and the table are equal with value \mu (a) show in the abscence of friciton...

If you couldn't tell I am new to the board so any tips would be appreciated :) edit once again, I am sorry for not showing work but i really don't understand it, when i do the work i just kinda wing it and throw stuff together Homework Statement As shown a 0.5 kg mass is attached to a spring...

Homework Statement It is a three part question in which I have successfully answered the first two of the questions. Part. 1 A weight suspended from a spring is seen to bob up and down over a distance of 10 cm twice each second. What is the frequency? 2 Hz is the...

A uniform meter stick is hung at its center from a thin wire. It is twisted and oscillates with a period of 5 s. The meter stick is then sawed off to a length of 0.76 m, rebalanced at its center, and set into oscillation. what is its new period I= 1/12 mL^2 equation: T= 2 pi * sqrt (I/k) where...

Homework Statement A horizontal piston-cylinder system containing n mole of ideal gas is surrounded by air at temperature T_{0} and pressure P_{0}. If the piston is displaced slightly from equilibrium, show that it executes simple harmonic motion with angular frequency...

Homework Statement A 74.4-kg bungee jumper is standing on a tall platform (h0 = 46.6 m). The bungee cord has an unstrained length of L0 = 9.54 m and, when stretched, behaves like an ideal spring with a spring constant of k = 61.8 N/m. The jumper falls from rest, and it is assumed that the only...

1. A 0.69 kg block is hung from and stretches a spring that is attached to the ceiling. A second block is attached to the first one, and the amount that the spring stretches from its unstrained length increases by a factor of 5. What is the mass of the second block? 2. Force= spring...

Homework Statement A 0.200-m uniform bar has a mass of 0.790 kg and is released from rest in the vertical position, as the drawing indicates. The spring is initially unstrained and has a spring constant of k = 20.0 N/m. Find the tangential speed with which end A strikes the horizontal surface...

Homework Statement A very light, rigid rod with a length of 0.570 m extends straight out from one end of a meter stick. The stick is suspended from a pivot at the far end of the rod and is set into oscillation. Determine the period of oscillation. Homework Equations omega =...

The Question Relevant equations KE=0.5*m*v^2 T=2*pi*sqrt(m/k) EE=0.5*k*x^2 KEi+UEi=KEf+UEf I think that's all of them attempt at a solution I was thinking about just using the conservation of energy at the the equilibrium point, as the kinetic energy would be at a max there and...

Homework Statement A block rests on a frictionless horizontal surface and is attached to a spring. When set into simple harmonic motion, the block oscillates back and forth with an angular frequency of 6.6 rad/s. The drawing indicates the position of the block when the spring is unstrained...

Homework Statement Hey I'm building a graph of period squared vs. mass for simple harmonic motion finding the slope and getting K for a spring. since T^2 = ((4*pi^2)/k)m the slope is (4*pi^2)/k so I get my slope from my graph and it has an uncertainty of +- 0.2 to get K we...

Homework Statement A 0.12-kg block is suspended from a spring. When a small stone of mass 30 g is placed on the block, the spring stretches an additional 5 cm. With the stone on the block, the spring oscillates with an amplitude of 12 cm. What is the net force of the stone when it is at a point...

Simple harmonic motion question! Homework Statement A mass undergoing simple harmonic motion has a displacement of X = 0.5 m and V = 4 m/s at one time and x=.25 and V = -8. what is the period of this oscillation? Homework Equations X(t) = Acos (wt + phi) V(t) = -Awsin (wt + phi)...

Homework Statement A mass of 1 slug is suspended from a spring whose spring constant is 9 lb/ft. The mass is initially released from a point 1 foot above the equilibrium position with an upward velocity of \sqrt{3} ft/s. Find the times at which the mass is heading downward at a velocity of 3...

A mass is suspended by a spring. The mass is pulled down and released at t=0. The equation for its displacement x in m from the equilibrium position is x = 0.050 cos(πt). π = pi = 3.14159 for clarification (because it looks like an n for some reason) (a) What is (i) the amplitude, (ii) the...

Homework Statement The velocity of an object in simple harmonic motion is given by v(t)= -(0.347 m/s)sin(15.0t + 2.00π), where t is in seconds. What is the first time after t=0.00 s at which the velocity is -0.100 m/s? Homework Equations The Attempt at a Solution -0.1 = -(0.347)sin(15t...

I took calc-based physics 1 last semester, but since it was at a community college, I don't think we went as far as the 4 year universities went. We skipped over simple harmonic motion. Will this hurt me later on, when I go to mid-level and upper-level physics courses at the 4-year university...

Homework Statement A 180 g mass on a 2.5m long string is pulled 6.6 degrees to one side and released. How long does it take for the pendulum to reach 2.7 degrees on the opposite side?Homework Equations omega = sqrt(g/L) theta = S/L theta(t) = A * cos(omega * t + phi) The Attempt at a...

1. Angular frequency is introduced into the analysis of simple harmonic motion because: 1. Because the unit of hz is not a convnient unit for frquency. 2. to create a mathematical relationship between displacement and time. 3. To create a link between mass and frequency of vibration. 4...

Homework Statement A moving particle displays simple harmonic motion with an amplitude of 3 cm. What position will it be for it to have half of its maximum speed? Homework Equations vmax= omega*A The Attempt at a Solution I divided the amplitude by 2 but I believe that's an...

Homework Statement The frequency fd of a damped oscillator is 100 Hz, and the ratio of the amplitudes of two successive maxima is one half. What is the undamped frequency f0 of this oscillator?Homework Equations this is the equation in my textbook for the position at time t of an underdamped...

I'm wondering this because my textbook says that for small angles it is, but we learned that for simple harmonic motion to occur there must be a linear restoring force.. eg F= -kx.. but for the simple pendulum the restoring force is F= -mgsin(theta).. wouldn't this not be linear?

Homework Statement A block of unknown mass is attached to a spring with a spring constant of 5.50 N/m and undergoes simple harmonic motion with an amplitude of 12.5 cm. When the block is halfway between its equilibrium position and the end point, its speed is measured to be 25.0 cm/s. (a)...

Homework Statement a particle of mass m moves in one dimension with an applied force Fx=-Fosinh(\alphax) where \alpha and Fo are constants. find the frequency of small oscillations about the equilibrium position. next, find the potential energy function and sketch it. Homework Equations...

Homework Statement A particle of mass m moves in the one dimensional Poschel-Teller potential V(x). Find an expression for the natural frequency of small oscillations. Homework Equations V(x) = -V_{0}sech^{2}(x/\lambda) The Attempt at a Solution I am making the uncertain assumption that...

Homework Statement A spiral spring of natural length 300mm is suspended vertically from a fixesd point with ita upper end fixed .A mass of 0.150 kg is suspended at rest from the lower end of the spring to increase its length to 355mm.The mass is then pulled down a further distance of 30 mm...