A block of mass 4 kg is kept on a rough horizontal surface.The coefficient of static friction is 0.8.If a force of 19 N is applied on the block parallel to the floor, then the force of friction between the block and floor is

Options

(a) 32 N
(b) 18 N
(c) 19 N
(d) 9.8 N

Correct Answer:

32 N

Explanation:

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