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A force of 3x^(2)-2x+5 acts on a body of...

A force of `3x^(2)-2x+5` acts on a body of mass 5 kg and displaces it from `x=0` to `x=4`m. What is the work done by the force?

A

42J

B

55J

C

68J

D

84J

Text Solution

Verified by Experts

The correct Answer is:
C
The work done in taking a body from the floor to the top of a table depends upon the height of the table.
W =mgh
It does not depend upon the actual path as well as speed and time.
Its power depends upon speed and time.
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