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Q.

A body of mass m slides down an inclined plane making an angle of 45° with the horizontal. If the coefficient of friction between the body and the plane be 0.3, the acceleration of the body is approximately equal to :

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a

0.22 s

b

0.30 g

c

0.49 g

d

0.70 g

answer is C.

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Detailed Solution

Acceleration a=mgsin⁡45∘−μmgcos⁡45∘m
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