Physics

Problem

Just before a

5\,\text{kg}

block starts sliding on a horizontal floor with coefficient of static friction

0.4

, the resultant contact force on the block makes an angle with the vertical. Calculate this angle. (Take

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

.) a)

38^{\circ}

22^{\circ}

67^{\circ}

24^{\circ}