posted by Anonymous .
A 39.5 N child is in a swing that is attached to ropes 2.01
What is the gravitational potential energy when the ropes make a 32.1° angle with the vertical?
How high has the child been raised?
I get 2.01(1-cos32.1)
why would you subtract cos32.1 from 1?
and how would u find the gravitational potential energy when the child is at the bottom of the circular arc? would u just multiply the force (39.5N) by the height (2.01m)?