Work done on the body is equal to the:
Correct answer: B. Change in its K.E and change in its P.E
- A. Change in its K.E always
- B. Change in its K.E and change in its P.E
- C. Change in its P.E always
- D. neither change in K.E nor change in its P.E
Explanation
By work energy principle:"Work done on a body equals the change in its kinetic energy and change in potential energy of the body."Work done = ∆K.E. + ∆P.E.
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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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