Posted by **Jen** on Friday, October 26, 2007 at 3:59pm.

An object is suspended from a spring and vibrates with simple harmonic motion. At an instant when the displacement of the object is equal to one-half the amplitude, what fraction of the total energy of the system is kinetic and what fraction is potential?

- College Physics -
**drwls**, Friday, October 26, 2007 at 4:04pm
Potential energy of a vibrating spring is proportional to the square of the displacement (P.E = kx^2/2, where k is the spriong constant). At maximum displacement, ALL of the energy is potential energy, because motion temporaily stops and KE is zero. At 1/2 maximum displacement, the P.E. is 1/4 of that total energy. That means that 3/4 must be kinetic energyn there.

## Answer This Question

## Related Questions

- physics - A 0.20 kg object, attached to a spring with spring constant k = 10 N/m...
- PHYSICS - An object is attached to an ideal spring. It undergoes a simple ...
- science - A 0.20 kg object, attached to a spring with spring constant k = 10 N/m...
- physics help! - Objects of equal mass are oscillating up and down in simple ...
- physics - An object of mass m attached to a spring of force constant k ...
- College Physics - Can someone check my answers for two and help me with the ...
- physics - A object-spring system undergoes simple harmonic motion with an ...
- phyics - Objects of equal mass are oscillating up and down in simple harmonic ...
- physics - An object with mass 3.0 kg is attached to a spring with spring ...
- physics - A particle vibrates in Simple Harmonic Motion with amplitude. What ...

More Related Questions