When the applied force and covered displacement are parallel to each other then work done of the body is:
Correct answer: C. Maximum
- A. Zero
- B. Negative
- C. Maximum
- D. Minimum
Explanation
Work W = F d cosθ is maximized when θ = 0° (cos θ = 1), i.e., force parallel to displacement, so the work is maximum.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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