Question

4. A block of mass 3 kg is placed on a rough horizontal
surface (u= 0.4). A force of 8.7 N is applied on the
block. The force of friction between the block and floor
(a) 8.7 N
(c) 10 N
(b) 12 N
(d) zero​

Answer 1

Explanation:

The solution is in attachment.

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