Gravitational Potential Energy Video Lessons

Concept

# Problem: A 1100kg wrecking ball hangs from a 14m -long cable. The ball is pulled back until the cable makes an angle of 30.0° with the vertical.By how much has the gravitational potential energy of the ball changed?

###### FREE Expert Solution

Change in potential energy:

$\overline{){\mathbf{∆}}{\mathbf{P}}{\mathbf{E}}{\mathbf{=}}{\mathbf{m}}{\mathbf{g}}{\mathbf{h}}}$

Height, h = L - L cosθ

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###### Problem Details

A 1100kg wrecking ball hangs from a 14m -long cable. The ball is pulled back until the cable makes an angle of 30.0° with the vertical.
By how much has the gravitational potential energy of the ball changed?