Q: A girl whose weight is 200 N, climbs on a tree which height is 2-meter. What was the work done by the girl after climbing the tree? (g = 10 m /secA girl whose weight is 200 N, climbs on a tree which height is 2-meter. What was the work done by the girl after climbing the tree? (g = 10 m /sec²))
A.
800J
B.
400J
C.
200J
D.
2000J
Correct Answer:
Option B - Given, Weight = mg = 200N
h = 2m
Work done by the girl = Potential energy
= mgh = 200x2 = 400J
B. Given, Weight = mg = 200N
h = 2m
Work done by the girl = Potential energy
= mgh = 200x2 = 400J
Explanations:
Given, Weight = mg = 200N
h = 2m
Work done by the girl = Potential energy
= mgh = 200x2 = 400J
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