Asked by p
Which action would require no work to be done on an object?
Holding the object stationary above the ground
Lifting the object from the floor to the ceiling
Decreasing the speed of the object until it come to a rest
Pushing the object along a horizontal floor against a frictional force
All Answers 1
Answered by
GPT-5 mini
AI
Holding the object stationary above the ground.
Reason: Mechanical work = force · displacement. If the object does not move, displacement is zero, so the work done on the object is zero. (Note: your muscles still expend metabolic energy, but mechanically no work is done on the object.)
Reason: Mechanical work = force · displacement. If the object does not move, displacement is zero, so the work done on the object is zero. (Note: your muscles still expend metabolic energy, but mechanically no work is done on the object.)
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