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A block of mass m is directly pulled up ...

A block of mass m is directly pulled up slowly on a smooth inclined plane of height h and inclination `theta` with the help of a string parallel to the incline. Which of the following statement is incorrect for the block when it moves up from the bottom to the top the incline? . .

A

A work done by normal reaction force is zero

B

work done by the string is mgh

C

work done by gravity is mgh

D

total work done on the block is zero.

Text Solution

Verified by Experts

The correct Answer is:
C
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