A
56 kg skier is at the top of a slope, as shown in the illustration below. At the initial point
A, the skier is
h =
8.4 m vertically above the final point
B.
(a) Set the zero level for gravitational potential energy at
B, and find the gravitational potential energy associated with the skier at
A and
B. Then find the difference in potential energy between these two points.
PEA = | (No Response)
4610
J |
PEB = | (No Response)
0
J |
difference in PE = | (No Response)
4610
J |
(b) Repeat this problem with the zero level at
A.
PEA = | (No Response)
0
J |
PEB = | (No Response)
-4610
J |
difference in PE = | (No Response)
4610
J |
(c) Repeat this problem with the zero level midway down the slope, at a height of
4.2 m.
PEA = | (No Response)
2310
J |
PEB = | (No Response)
-2310
J |
difference in PE = | (No Response)
4610
J |