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A Puzzling Equation: Will the Block Slide or Not?
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[QUOTE="teo11, post: 6838214, member: 732129"] I think I have found it. It involves using the concept of finding max. friction required at any surface which can be done by using an FBD, considering a system of either the upper of lower blocks depending upon net forces on this system and taking its acc to be Ac that is (net force on all blocks/ total mass). Now I see the weakest interface (which will break first by considering an imaginary force increasing), which in our simple case of n blocks with one force at bottom for first break would turn out to be finding min coefficient of static friction among all. Now repeat with more complicated expressions for the first surface which will break as there are #2 forces (one of top of first break) and the 2nd on the bottom one and we have a solution. [/QUOTE]
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A Puzzling Equation: Will the Block Slide or Not?
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