Physics

Problem

A body of mass

2\text{kg}

slides down with an acceleration of

3\text{m/s}^2

on a rough inclined plane having a slope of

30^\circ

. The external force required to take the same body up the plane with the same acceleration will be: (

g = 10\text{m/s}^2

) [Online April 15, 2018] (a)

4\text{N}

(b)

14\text{N}

(c)

6\text{N}

(d)

20\text{N}