(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

a 40.0 kg child is in a swing hat is attached to ropes 2.00 m long. find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions:

a. when the ropes are horizontal

b. when the ropes make a 30.0 degree angle with the vertical

c. at the bottom of the circular arc

2. Relevant equations

so i used the gravitational potential energy formula which is mass x free-fall acceleration x height

i used 9.81 as the acceleration and that i thought wait if for a it is horizontal

3. The attempt at a solution

for my answer i kept on getting 1200 but in the text book part a is 785 J for part b it is 105 J and for part c it is 0.00 J. i figured out Part A but i cannot figure out part b or c please help i need someone to just help walk me through it since i am stuck i am a high school student doing physics one honors

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Potential Energy of a child on a swing

**Physics Forums | Science Articles, Homework Help, Discussion**