• Support PF! Buy your school textbooks, materials and every day products Here!

Find the gravitational potential energy

  • Thread starter mustang
  • Start date
169
0
Given: g=9.81 m/s^2.
A 41.7 kg child is in a swing that is attached to robes 2.16 m long. Find the gravitional potiental energy associated with the child relative to the child's lowest position under the following conditions:
B. when the ropes make a 34.7 degree angle with the vertical.

What equation would I use?
 

Answers and Replies

HallsofIvy
Science Advisor
Homework Helper
41,732
893
Well, potential energy = mgh looks good!

You might also want to draw a picture and use a little trigonometry to determine exactly what h is when the swing makes an angle of 34.7 degrees with the vertical.
 

Related Threads for: Find the gravitational potential energy

Replies
0
Views
222
Replies
1
Views
7K
Replies
1
Views
5K
Replies
2
Views
2K
Replies
4
Views
921
Replies
1
Views
445
Top