Question

5.
A block of mass 4 kg is placed on a rough
horizontal plane. A time dependent horizontal force
F = 2t (N) acts on the block. The frictional force
between the block and plane at time t = 2 s is
(u = 0.2)
(1) 4N
(2) BN
(3) 10 N
(4) 12 N​

Answer 1

Answer:

4N is answered this question