Physics · Work, Power and Energy
Work done by a force on a body is said to be positive when:
- 1The force has a component in the direction of displacement (θ < 90°).✓
- 2The force opposes the motion of the body (θ = 180°).
- 3The displacement of the body is zero.
- 4The angle between the force and displacement vectors is 90°.
Correct answer
The force has a component in the direction of displacement (θ < 90°).
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