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July 24, 2014

July 24, 2014

Posted by **miranda** on Sunday, September 13, 2009 at 10:11pm.

A 2.66 kg object placed on a frictionless horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging 8.39 kg object. Find the magnitude of the acceleration of the two objects.

- physics -
**drwls**, Sunday, September 13, 2009 at 10:57pmLet M1 be the mass on the table and M2 be the mass hanging from the pulley. Let T be the tension force in the cable that connects them. Both masses accelerate at the same rate a, but in different directions.

Solve this pair of equations. There are two unknowns, a and T.

M1 g - T = M1 a

T = M2 a

Add the two equations to elimimate T

M1 g = (M1 + M2) a

Solve for a.

- physics -
**Luke**, Sunday, September 13, 2009 at 11:00pmthanks for your help drwls.

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