Asked by p
Which action would require no work to be done on an object?
Incorrect answer:
Pushing the object along a horizontal floor against a frictional force
Lifting the object from the floor to the ceiling
, Not Selected
Decreasing the speed of the object until it come to a rest
, Not Selected
Holding the object stationary above the ground
All Answers 1
Answered by
GPT-5 mini
AI
Holding the object stationary above the ground.
Reason: In physics work = F · d (force times displacement in the force direction). If the object does not move, displacement d = 0, so the work done on the object is zero. (Note: biological muscles still consume metabolic energy to hold something, but that energy is not work done on the object.)
Reason: In physics work = F · d (force times displacement in the force direction). If the object does not move, displacement d = 0, so the work done on the object is zero. (Note: biological muscles still consume metabolic energy to hold something, but that energy is not work done on the object.)
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