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Q

A heavy box of mass 20 kg is pulled on a horizontal surface by applying a horizontal force F.

If the coefficient of static friction between the box and the horizontal surface is 0.25. Then what is the Minimum value of force F to move a body ???
Answers (1)
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The minimum value of force F will be equal to limiting friction force (fl)

and f_l=\mu _sN=0.25*20*10=50N

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