A mass m rests on a horizontal surface. The coefficient of friction between the mass and the surface
is u. If the mass is pulled by a force F. The limiting friction between mass and the surface will be
a) umg
b) u(mg-√3/2F)
c) u(mg-F/2)
d) u(mg+F/2)
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U(mg-f/2)
Is the answer
Is the answer
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