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Question

If a body moves along a frictionless horizontal surface its weight:
  1. Does work
  2. Does not work
  3. Work partially
  4. None of these

A
Does not work
B
None of these
C
Does work
D
Work partially
Solution
Verified by Toppr

Work done by the force of gravity on an object (weight) depends on vertical displacement.
Vertical displacement, h=0
Mass, m
Acceleration due to gravity, g
Work done, W=mgh
W=mg×0
W=0 J

If a body moves along a frictionless horizontal surface its weight does not work.

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