Question

A block of mass 2 kg is resting on a
rough horizontal surface. The coefficients
of static and kinetic frictions between the
block and surface are 0.7 and 0.6
respectively. A horizontal force F = (4
N/s)xt is applied on the block at t = 0. Att
= 4 s, the force of friction on the block is
(take g = 10m/s)
(A) 16 N
(B) 14 N.
(C) 12N​

Answer 1

Answer:

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