In physics, WORK is said to be done on an object ONLY when:
AThe person applying force feels tired physically
BA force is present but the object remains stationary
CA force is applied AND the object moves (displacement)
DThe object moves on its own without any applied force
Answer & Solution
Correct answer: C. A force is applied AND the object moves (displacement)
In physics, work is done only when a force produces displacement. Standing still holding a bag involves force but no motion = NO work. W = F × s × cos θ. SI unit: joule (J).
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