Solution 9.2b

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(New page: The sum of the forces is zero as the body has constant velocity. This means the sum of the forces in all directions is zero. Resolving horisontally, <math>\begin{align} & \to :\quad 42\c...)
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(New page: The sum of the forces is zero as the body has constant velocity. This means the sum of the forces in all directions is zero. Resolving horisontally, <math>\begin{align} & \to :\quad 42\c...)
 

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The sum of the forces is zero as the body has constant velocity. This means the sum of the forces in all directions is zero.

Resolving horisontally,

\displaystyle \begin{align} & \to :\quad 42\cos {{30}^{\circ }}-P=0 \\ & \\ & P=42\cos {{30}^{\circ }}=36\textrm{.}4\ \text{N} \\ \end{align}

Resolving vertically,

\displaystyle \begin{align} & \uparrow :\quad 25+42\times \sin {{30}^{\circ }}-Q=0 \\ & \\ & Q=25+21=46\ \text{N} \\ \end{align}