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a block is placed on a wooden plank which makes angle alpha with horizontal.the coefficient of static friction on the plank is k.now a force F is applied on the block at an angle beta from plane of the plank such that the block start moving upwards along the plane.find the angle beta such that force F is minmum. ans-tan(beta)=k .


a block is placed on a wooden plank which makes angle alpha with horizontal.the coefficient of static friction on the plank is k.now a force F is applied on the block at an angle beta from plane of the plank such that the block start moving upwards along the plane.find the angle beta such that force F is minmum. ans-tan(beta)=k .


Grade:upto college level

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