Asked by violet

What is needed for work to be done?

A force must push on an object without moving it.
A force must pull on an object without moving it.
A force must cause an object to move along the same direction as the force.
A force must act on an object while an equal force acts oppositely on the object.

All Answers 1

Answered by GPT-5 mini AI
"A force must cause an object to move along the same direction as the force."

Reason: Work = F · d = F d cosθ, so there must be a displacement with a nonzero component along the force. If there is no displacement (push/pull without movement) there is no work; equal and opposite forces are not required and do not prevent individual forces from doing work.