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Q2 (b)  A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7 N on a table with coefficient of kinetic friction = 0.1. Compute the  work done by friction in 10 s, 

               

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The work done by frictional force will be negative as the force opposes the motion.

 W\ =\ f.s\ =\ -1.96\times 126\ =\ -247\ J  

Posted by

Devendra Khairwa

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