1.

Acceleration time graph of a particle is shown. Workdone by all the force acting on the particle of mass m in time interval t_(1) and t_(2), while a_(1) and a_(2) is the acceleration at time t_(1) and t_(2). Then find the value of a_(1) is (ma_(1)^(2))/(m_(1)^(2))[t_(2)^(4)-t_(1)^(4)]. Then the value of n is

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