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

A 1000 kg roller coaser train is intially at the top of a rise, at point A. It then moves 135 ft, at an angle of 40 degrees below the horizontal, to a lower point B.

Choose the train at point B to be the zero configuration for gravitational potential energy. Find the potential energy of the roller coaster-Earth system at points A and B, and the change in potential energy as the coaster moves.

2. Relevant equations

Ug=mgy

3. The attempt at a solution

Y at Point A=86.8 m

Ug= 850640 Kj

This isn't the right answer, so where am I going wrong?

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# Homework Help: Roller coaster and Potential Energy

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