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A crate is pulled along a horizontal sur...

A crate is pulled along a horizontal surface at constant velocity by an applied force F that makes an angle `theta` with the horizontal. The coefficient of kinetic friction between the crate and the surface is `mu`. Find the angle `theta` such that the applied force is minimum to slide the block. Also find the minimum value of this force.

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The correct Answer is:
`tan^(-1)mu,(mmg)/(sqrt(1+m^(2))]`
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