Physics

Problem

4\,\text{kg}

block rests on a rough horizontal table (

\mu_s = 0.30

). It is attached by a light string over a smooth pulley to a hanging mass

m_2

. The minimum value of

m_2

that will just set the system in motion is a)

1.7\,\text{kg}

1.2\,\text{kg}

0.8\,\text{kg}

2.0\,\text{kg}