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A block of 4kg is kept …

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A block of 4kg is kept on ground the coefficient of friction between block and the ground is 0.80 . An external force of magnitude 30 N is applied parallel to the ground the resultant force exerted by the block on ground is
  • 1 answers

Preeti Dabral 1 year, 6 months ago

Explanation: N = mg = 40
(fs )max =  μN = (0.8) (40) = 32 
f s = ext. force = 30
R2 = N2 + fs 2 = (50)2 
R = 50 N.

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