# Homework Help: Swinging Monkey

1. Jan 27, 2010

### tigerwoods99

Swinging Monkey!!!

1. The problem statement, all variables and given/known data
A 9.0 kg monkey swings from one branch to another 1.3 m higher. What is the change in potential energy?

2. Relevant equations

Ke = (1/2)mv^2
GPE = mgh
EPE = (1.2)Kx^2

3. The attempt at a solution

2. Jan 27, 2010

### tiny-tim

Hi tigerwoods99!

(try using the X2 tag just above the Reply box )
ok … which of those equations is it?

3. Jan 27, 2010

### Phyisab****

Re: Swinging Monkey!!!

Take a guess. Here's a hint: you only need one formula, and it involves the thing you're trying to find.

4. Jan 27, 2010

### tigerwoods99

Re: Swinging Monkey!!!

I am gonna take a guess and say its the Gravitational Potential because if the object is higher the potential is greater.

So would it be final - initial potential

(8*9.8)(1.3) - (8*9.8)(0) = 101.92?

5. Jan 27, 2010

### Phyisab****

Re: Swinging Monkey!!!

I'm not gonna check your calculator work but you used 8m not 9m not sure which want the problem actually says . Other than that looks good.

6. Jan 27, 2010