Physics

Problem

8\,\text{kg}

block lies on a rough horizontal surface for which the coefficient of static friction is

0.30

. It is pulled by a light string making an angle

\theta

above the horizontal. When the tension in the string is

30\,\text{N}

, the block is on the verge of sliding but remains at rest. The angle

\theta

is closest to a)

70^{\circ}

56^{\circ}

32^{\circ}

41^{\circ}