A block of mass 70 kg is kept on a rough horizontal surface and coefficient of static friction b...

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A block of mass 70 kg is kept on a rough horizontal surface and coefficient of static friction between block and surface is 0.4 . A man is trying to pull the block by applying a horizontal force .The net contact force exerted by the surface on the block is F\n , then:
Class: 12
Subject: PHYSICS
Chapter: NTA NEET SET 57
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