From Mechanics

Revision as of 11:55, 26 June 2010 (edit) Ian (Talk | contribs) ← Previous diff		Current revision (13:26, 6 March 2011) (edit) (undo) Ian (Talk | contribs)
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-	Moment about <math>= </math> is	+	Take moments about the pivoted end of the level, <math>O</math>.
-	<math>1.5\sin {{60}^{\circ }}\times 80=1.5\times 0.866\times 80=103.9\ \text{N}</math>	+	<math>1 \textrm{.}5\sin {{60}^{\circ }}\times 80=1 \textrm{.}5\times 0 \textrm{.}866\times 80=103 \textrm{.}9\ \text{N}</math>

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Current revision

Take moments about the pivoted end of the level, \displaystyle O.

\displaystyle 1 \textrm{.}5\sin {{60}^{\circ }}\times 80=1 \textrm{.}5\times 0 \textrm{.}866\times 80=103 \textrm{.}9\ \text{N}