a) How much work does its weight do on it from that point to point A? b) How muc

Question

a) How much work does its weight do on it from that point to point A?

b) How much work does its weight do on it from that point to point B?

c) How much work does its weight do on it from that point to point C?

d) If the gravitational potential energy of the coaster-Earth system is taken to be zero at point C, what is its value when the coaster is at point B?

e) If the gravitational potential energy of the coaster-Earth system is taken to be zero at point C, what is its value when the coaster is at point A?

Explanation / Answer

part A :

Work Done = W = F s

W = 1000* 9.8 * 0 = 0 J

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part B :

W = F h/2

W = 1000* 9.8 * 22/2

W = 107800 J

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part C:

W = Fd

W = 1000* 9.8 * 22

W = 215600 J
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part D:

W = F h/2

W = 1000* 9.8 * 22/2

W = - 107800 J

------------------

part E:

saemas part C = 215600 J

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