HOTS Problems : Laws Of motion

Problem 1:  A particle of mass m, originally at rest, is subjected to a force whose direction is constant but whose magnitude varies with the time according to the relation

 

where F0 and T are constants. The force acts only for the time interval 2T.

Prove that the speed v of the particle after a time 2T has elapsed is equal to 4FoT/3 m.

Solution :

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