In Fig . 7.151 , coefficient of kinetic ...

In Fig . 7.151 , coefficient of kinetic friction between the 4 kg block and the inclined surface is `(1)/(sqrt3)` . Here 'm' is such a mass that the 4 kg block is moving up the plane with a constant speed , then m is :

2 kg

2.8 kg

3.4 kg

4 kg

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GRB PUBLICATION-FRICTION AND CIRCULAR MOTION -OBJECTIVE QUESTIONS ( only one choice is correct )

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