Physics

Problem

10\,\text{kg}

block on a rough horizontal surface is pulled by a

50\,\text{N}

force making an angle of

30^{\circ}

above the horizontal. The coefficients of friction are

\mu_s = 0.40

and

\mu_k = 0.30

. Take

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

. The acceleration of the block is closest to a)

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

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

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

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