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Revision as of 15:26, 13 September 2010 (edit) Ian (Talk | contribs) (New page: The diagram shows the forces acting on the ladder. Taking moments about the base of the ladder: <math>\begin{align} & 5\sin 70{}^\circ \times S=2\textrm{.}5\cos 70{}^\circ \times 245 \\...) ← Previous diff		Current revision (15:48, 13 September 2010) (edit) (undo) Ian (Talk | contribs)
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	The diagram shows the forces acting on the ladder.		The diagram shows the forces acting on the ladder.
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	Taking moments about the base of the ladder:		Taking moments about the base of the ladder:

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Current revision

The diagram shows the forces acting on the ladder.

Taking moments about the base of the ladder:

\displaystyle \begin{align} & 5\sin 70{}^\circ \times S=2\textrm{.}5\cos 70{}^\circ \times 245 \\ & S=\frac{2\textrm{.}5\cos 70{}^\circ \times 245}{5\sin 70{}^\circ }=44\textrm{.}59\text{ N} \\ \end{align}

Considering the horizontal forces \displaystyle F=S=44\textrm{.}59\text{ N}

Considering the vertical forces \displaystyle R=245\text{ N}