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Revision as of 10:38, 11 March 2010 (edit) Ian (Talk | contribs) (New page: The lift force <math>F</math> must balance the weight <math>W</math>, that is <math>F-W=0</math> But <math>W=mg=800\times 9.8=7840\ \text{N}</math> Which gives <math>F=W=840\ \text{N...) ← Previous diff		Revision as of 15:38, 3 February 2011 (edit) (undo) Ian (Talk | contribs) Next diff →
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	<math>F-W=0</math>		<math>F-W=0</math>
-	But <math>W=mg=800\times 9.8=7840\ \text{N}</math>	+	But <math>W=mg=800\times 9\textrm{.}8=7840\ \text{N}</math>
	Which gives		Which gives
	<math>F=W=840\ \text{N}</math>		<math>F=W=840\ \text{N}</math>

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Revision as of 15:38, 3 February 2011

The lift force \displaystyle F must balance the weight \displaystyle W, that is

\displaystyle F-W=0

But \displaystyle W=mg=800\times 9\textrm{.}8=7840\ \text{N}

Which gives \displaystyle F=W=840\ \text{N}