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A block of mass 4kg rests on an an incli...

A block of mass 4kg rests on an an inclined plane. The inclination of the plane is gradually increased. It is found that when the inclination is 3 in 5 `(sin=theta(3)/(5))` the block just begins to slide down the plane. The coefficient of friction between the block and the plane is.

A

0.4

B

0.6

C

0.8

D

0.75

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The correct Answer is:
4
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