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A force of 5 N making an angle with the ...

A force of 5 N making an angle with the horizontal acting on an object displaces it by 0.4 m along the horizontal direction. If the object gains kinetic energy of 1 J the horizontal component of the force is

A

1.5N

B

2.5N

C

3.5N

D

4.5N

Text Solution

Verified by Experts

The correct Answer is:
b
Work done = Fs cos theta =5xx0.4costheta=2costheta but ,work done =Delta K.E
` 2cos theta=1j`
`costheta =1/2` Horizontal components `F_(x) = Fcostheta=5xx1/2=2.5n`
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