1. ## Spring Energy Problem

A 2.7 kg block hangs at the end of a spring. When the block is at rest, the spring is stretched 0.38 m away from its equilibrium position. The block is set into simple harmonic motion and oscillates with an amplitude of 0.24 m. What is the total energy of the block/spring system?

Relevant equations
$\displaystyle Total energy=\frac{1}{2}kA^2$
there are also PE and KE energy equations...
and $\displaystyle W_{freq}= \sqrt {\frac {k}{m}}$
There are also the PE and KE equations...but they are kinda long (since i'm still a newbie at latex)

2. Originally Posted by Linnus
A 2.7 kg block hangs at the end of a spring. When the block is at rest, the spring is stretched 0.38 m away from its equilibrium position. The block is set into simple harmonic motion and oscillates with an amplitude of 0.24 m. What is the total energy of the block/spring system?

Relevant equations
$\displaystyle Total energy=\frac{1}{2}kA^2$
there are also PE and KE energy equations...
and $\displaystyle W_{freq}= \sqrt {\frac {k}{m}}$
There are also the PE and KE equations...but they are kinda long (since i'm still a newbie at latex)
$\displaystyle \text{Total energy} =\frac{1}{2}kA^2$.

You know A, you need k: (2.7)(g) = (k)(0.38) => k = .....