Physics

Problem

10\,\text{kg}

box rests on a rough

15^{\circ}

incline. The coefficient of static friction between the box and the incline is

\mu_s = 0.50

. What is the smallest force directed parallel to the incline and up the slope that will make the box just begin to move up the incline? (Use

g = 9.8\,\text{m}\!/\!\text{s}^2

.) a)

47.3\,\text{N}

25.4\,\text{N}

72.8\,\text{N}

98\,\text{N}