Physics
posted by Anonymous .
A spring, (spring constant of 400 N/m) is displaced .75 m from its equilibrium position. An 8kg mass is connected to the spring and it is allowed to oscillate horizontally with Simple Harmonic Motion. What is the Kinetic Energy of the mass?

A=0.75 m, m=8 kg, k= 400 N/m
ω=sqrt(k/m) = …
x=Acosωt
v=  Aωsinωt
v(max) = Aω
KE=mv²/2 =0.5m A²ω²sinωt
KE(max) = 0.5m A²ω²
Respond to this Question
Similar Questions

Physics
I need help with part b, c, and d please! A 45 g mass is attached to a massless spring and allowed to oscillate around an equilibrium according to: y(t) = 1.4 * sin( 4 * t ) where y is measured in meters and t in seconds.  … 
Physics
I need help with b... I found that k=.750880 for part a but I can't figure out what y would be to get potential energy. A 52 g mass is attached to a massless spring and allowed to oscillate around an equilibrium according to: y(t) … 
simple harmonic motion.
A 5.80 kg object on a horizontal frictionless surface is attached to a spring with spring constant 860 N/m. The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 9.9 m/s back toward the equilibrium … 
physics
A particle vibrates in Simple Harmonic Motion with amplitude. What will be its displacement in one timeperiod if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. … 
physics
if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to rest after stretching by a distance 'd'; proportional to the weight of the mass, when the … 
physics
if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to rest after stretching by a distance 'd'; proportional to the weight of the mass, when the … 
physics  really dnt get this at all
if friction is set to zero and on planet Earth. Now, if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to rest after stretching by a distance … 
physics help!
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 155 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of … 
physics
A 2.24 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.45 N/m. The mass is displaced 3.06 m to the right from its equilibrium position and then released, which initiates … 
phyics
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 175 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of …