A block of mass `4 kg` is placed  on a rough  horizontal force plane. A time dependent
Channel: Doubtnut
Date: 2020-07-12

A block of mass `4 kg` is placed  on a rough  horizontal force plane. A time dependent horizontal force `F = k t` acts on the block. Here `k = 2 Ns^(-1)`. The frictional force between the block and plane at time `t = 2 s` is `(mu = 0.2)`