Moment of Inertia :: Discussion


2.A body of mass 5kg is raised vertically to a eight of 10m by a force of 170N. The velocity of the body at this height will be?
A.37m/s
B.22m/s
C.15m/s
D.9.8m/s
Answer:  Option  B
Explanation:

W = Gain in potential energy+Gain in kinetic energy
Fh = mgh + 1/2 mv2
170×10=5×10×10+1/2×5×v2
v = √480 = 22m/s.

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Published by:Michael Daani

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