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Old 2008-11-18, 14:45   #4
davieddy
 
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"Lucan"
Dec 2006
England

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Applying Newton's 2nd law to the top block we get
T - 9.8*1*0.37 = 1*a

For the bottom block we get
20 - T - 9.8*1*0.37 - 9.8*3*0.37 = 2*a

Adding the equations gives
20 - 9.8*5*0.37 = 3*a

David

Sorry to be too explicit for the homework help roolz :)

Last fiddled with by davieddy on 2008-11-18 at 15:18
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