Physics

Problem

5\,\text{kg}

block is placed on an inclined plane that makes an angle of

20^\circ

with the horizontal. The coefficient of kinetic friction between the block and the plane is

0.20

. A horizontal force of

40\,\text{N}

acts on the block, directed up the plane. Take

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

. Determine the magnitude and direction of the acceleration of the block. a)

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

up the plane b)

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

up the plane c)

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

down the plane d)

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

up the plane