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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A block of mass m lying on a horizontal surface (coefficient of static friction = μs) is to be brought into motion by a pulling force F. At what angle θ with the horizontal should the force F be applied so that its magnitude is minimum? Also find this minimum magnitude.

A block of mass m lying on a horizontal surface (coefficient of static friction = μs) is to be brought into motion by a pulling force F. At what angle θ with the horizontal should the force F be applied so that its magnitude is minimum? Also find this minimum magnitude.

The friction coefficient between the board and the floor shown in figure (6-E7) is μ. Find the maximum force that the man can exert on the rope so that the board does not slip on the floor.