A block is released from rest on a rough incline

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

Problem

4.0\,\text{kg}

block is released from rest on a

30^{\circ}

rough incline. The coefficient of kinetic friction between the block and the surface is

0.20

. Take

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

. What is the magnitude of the block’s acceleration down the slope? (a)

4.9\,\text{m/s}^2

(b)

3.9\,\text{m/s}^2

(c)

3.2\,\text{m/s}^2

(d)

2.9\,\text{m/s}^2