Work done is said to be negative if force and displacement are _.
Correct answer: C. Anti parallel
- A. Parallel
- B. Perpendicular
- C. Anti parallel
- D. None of these
Explanation
When the direction of motion and force acting on body are opposite i.e anti parallel, the work done is said to be negative. W = Fd W = Fd cos 180° W = -Fd A . W = Fd cos 0° W = Fd B . W = Fd cos 90° W = 0
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About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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