A body of mass 4 kg is freely dropped from a height 200 m to ground. At a contain height from the ground the potential energy of the body is 2000 joule, then the kinetic energy of the body at that point is
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Answer:
A force of 7N as on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. Wtm is the work done in this case?
Ans. F=7N
s = 8 m
W = F × s
= 7 N × 8 m
W = 56J
∴ Work done is 56 J.
Answered by
1
Answer:
56 J
Explanation:
F = 7 N
s = displacement= 8 m
W = F × s
= (7 × 8) Nm
= 56 J.
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