A block B of mass $$2$$ kg is kept on the rough surface of a plank ‘P’ as shown in figure. If the plank starts moving to the right with acceleration $$2$$ $$m/s2$$, acceleration of the block relative to the ground is $$1$$ $$m/s2$$.Then coefficient of kinetic friction between the block and the plank is

Question

A block B of mass $$2$$ kg is kept on the rough surface of a plank ‘P’ as shown in figure. If the plank starts moving to the right with acceleration $$2$$  $$m/s2$$, acceleration of the block relative to the ground is $$1$$  $$m/s2$$.Then coefficient of kinetic friction between the block and the plank is

Infinity Learn · Accepted Answer

$$(2)Frictional$$ force acting on the block is $$fk=$$μk.mgNow,    $$fk=m$$ × aB⇒μk.$$mg=$$ m× aB⇒μk  $$=$$  $$aBg=110$$ $$=0.1$$

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A block B of mass 2 kg is kept on the rough surface of a plank ‘P’ as shown in figure. If the plank starts moving to the right with acceleration 2 m/s2, acceleration of the block relative to the ground is 1 m/s2.Then coefficient of kinetic friction between the block and the plank is

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