at point J at point J change in potential energy J A 1100-kg roller coaster car

Question

at point J at point J change in potential energy J A 1100-kg roller coaster car is initially at the top of a rise, at point B J change in potential energy J A J at point A at point B J change in potential energy J (b) Repeat part (a), setting the zero configuration with the car at point A J at point B , and the change in potential energy as the coaster moves between these points. at point A and B to be the zero configuration for gravitational potential energy of the roller coaster?Earth system. Find the potential energy of the system when the car is at points B . (a) Choose the car at point A . It then moves 125 ft, at an angle of 40.0½ below the horizontal, to a lower point

Explanation / Answer

Displacement in travelling from A to B = 125sin(40) = 80.35 ft = 24.5 m

A.) Potential energy at A = mgh = 264110 J

at B = zero = 0 J

change in potential energy = -264110 J

b.) Now , Potential energy at A = 0 J

at B = -264110 J

change in potential energy = -264110 J

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