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The variation of net downward force F on...

The variation of net downward force `F` on a body on a rough inclined plane versus sine of angle of inclination is shown by the four graphs The correct one is

A

B

C

D

.

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The correct Answer is:
b
When a body of mass m is held on a rough inclined plane of inclination `theta` the net downward force on the body is `F = mg sin theta f`
wheref is the constant force of friction As `sin theta` increases `F` increases Choice is correct .
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