A block B of mass 4 Kg is placed on a rough horizontal plane.A time dependent force f=kt acts on the block,K=2 N/s2. The frictional force between the block and the plane at t=2 sec.is? Coef.of friction=0.2
A)4 N
B)8 N
C)12 N
D) 0 N
Ans: B)8 N
A block B of mass 4 Kg is placed on a rough horizontal plane.A time dependent force f=kt acts on the block,K=2 N/s2. The frictional force between the block and the plane at t=2 sec.is? Coef.of friction=0.2
A)4 N
B)8 N
C)12 N
D) 0 N
Ans: B)8 N