13 In this question use \(g = 9.8 \mathrm {~m} \mathrm {~s} ^ { - 2 }\)
A boy attempts to move a wooden crate of mass 20 kg along horizontal ground. The coefficient of friction between the crate and the ground is 0.85
13
- The boy applies a horizontal force of 150 N . Show that the crate remains stationary.
13 - Instead, the boy uses a handle to pull the crate forward. He exerts a force of 150 N , at an angle of \(15 ^ { \circ }\) above the horizontal, as shown in the diagram.
\includegraphics[max width=\textwidth, alt={}, center]{5e475c96-6bbb-44fb-a411-706dac20e2d6-19_244_915_408_561}
Determine whether the crate remains stationary.
Fully justify your answer.