When a force is parallel to the the direction of motion of body, the work done is:
Correct answer: D. Maximum
- A. Zero
- B. Minimum
- C. Infinity
- D. Maximum
Explanation
Work done is the dot product of force and displacement. Hence, W = FscosθWhere s is the displacement.Since, θ = 0°As force is parallel to displacement, therefore cos(0)=1. Therefore, Workdone will be maximum.
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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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