A body of mass m kg is lifted by a man to a height of one metre in 30 sec.Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio:
Correct answer: A. 1 : 1
- A. 1 : 1
- B. 2 : 1
- C. 4 : 1
- D. 1 : 2
Explanation
Correct option is A. Correct option is 1:1
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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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