Questions
A block of mass 4 kg rests on rough horizontal surface. A vertically downward force P is applied on the block. The block just starts sliding when horizontal force P is applied on the block. If , find the coefficient of friction between the block and the surface.
detailed solution
Correct option is C
Normal reaction N = mg + P∴ fmax=μN=μmg+P∴ P=μmg+P⇒μ=12mgmg+p=12mgmg+12mg=13Talk to our academic expert!
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A block of mass 1 kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. The magnitude of the force acting upwards at an angle of 60° from the horizontal that will just start the block moving is
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