Physics

Problem

4\,\text{kg}

block is pulled horizontally by a constant force of

18\,\text N

on a rough table. The coefficients of friction between the block and the table are

\mu_s = 0.50

and

\mu_k = 0.40

. Take

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

. The acceleration of the block is a)

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

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

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

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