Physics and Friction Forces
Find Fmin, the constant force with the least magnitude, that must be applied to the board in order to pull the board out from under the box (which will then fall off of the opposite end of the board).
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Let us assume the coefficient of kinetic friction be mu_k (< mu_s)
The maximum force (critical case) which will keep the block and board together:
For two ...
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This solution contains calculations and determines the maximum force (critical case) which will keep the block and board together.
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