Questions
A block of mass m, lying on a horizontal plane, is acted upon by a horizontal force P and another force Q, inclined at an angle to the vertical. The block ill remain in equilibrium, if the coefficient of friction between it and the surface is:
detailed solution
Correct option is
Frictional force = μR = μ(mg+Q cosθ)And horizontal push = P+Q sin θFor equilibrium, we haveμ(mg+Q cos θ) = P+Q sin θμ = P+Q sin θmg+Q cos θTalk to our academic expert!
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A block of mass 5 kg is placed on a rough horizontal plane. A time dependent horizontal force F = (t2+2t)N acts on the block. The friction force between the block and the plane at t = 3 s is ()
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