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A body of mass m starts sliding down an...

A body of mass m starts sliding down an incline of `30^(@)` from rest. The body comes to rest just when it reaches the bottom. If the top half of the plane is perfectly smooth and the lower half is rough, find the force of friction :

A

`(mg)/(4)`

B

`(mg)/sqrt(3)`

C

mg

D

`(mg)/sqrt(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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