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Question

The work done by a body in moving down a smooth inclined plane in comparison to being dropped vertically downwards from same height will be

किसी पिंड द्वारा समान ऊंचाई से लंबवत नीचे गिराए जाने की तुलना में एक घर्षण रहित झुके हुए  समतल  से नीचे जाने में किया गया कार्य होगा

A.

More

B.

Less

C.

Equally

D.

Zero in both cases

Answer ( Option C)

Equally

Solution

  • The total amount of energy in a body at a height h will be mgh .
  • The same energy will be converted into work during moving down.
  • Work done will be equal in both cases of inclined plane as well as in being dropped vertically downwards as there is no loss of energy in friction.

Hence, the correct option is (C).

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