A block lies on a horizontal table

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

2\,\text{kg}

block lies on a horizontal table. The coefficients of static and kinetic friction are

\mu_s=0.4

and

\mu_k=0.3

. A constant horizontal force of

12\,\text{N}

is applied. What is the acceleration of the block after it starts sliding? (Take

g=9.8\,\text{m s}^{-2}

) (a)

0\,\text{m s}^{-2}

(b)

5.7\,\text{m s}^{-2}

(c)

3.1\,\text{m s}^{-2}

(d)

2.1\,\text{m s}^{-2}