Friday
September 19, 2014

Homework Help: College Physics

Posted by Michelle on Friday, April 25, 2014 at 11:28am.

Can someone check my answers for two and help me with the third?

1) A mass m at the end of a spring of spring constant k is undergoing simple harmonic oscillations with amplitude A.

Part (a) At what positive value of displacement x in terms of A is the potential energy 1/9 of the total mechanical energy?
x= A/3

Part (b) What fraction of the total mechanical energy is kinetic if the displacement is 1/2 the amplitude?
KE fraction= (3/4)

Part (c) By what factor does the maximum kinetic energy change if the amplitude is increased by a factor of 3?
KE'max / KEmax = ?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - Janet wants to find the spring constant of a given spring, so she ...
Physics - "Two springs are hooked together and one end is attached to a ceiling...
Physics - A block of mass M=6 kg and initial velocity v=0.8m/s slides on a ...
physics - A spring (spring 1) with a spring constant of 520N/m is attached to a...
PHYSICS - a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
physics - a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
physics - If a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
Physics - A spring with a spring constant of 223.9 N/m is compressed by 0.220 m...
Physics Spring - A mass sitting on a horizontal, frictionless surface is ...
physics - One end of a massless coil spring is suspended from a rigid ceiling. ...

Search
Members