A force F=2t is spplied at t=0 sec to th...

A force `F=2t` is spplied at `t=0` sec to the block of mass m placed on a rough horizontal surface. The coefficient of static and kinetic friction between the block and surface are `mu_S` and `mu_k` rspectively. Which of the following graphs best represents the acceleration vs time of the block`(mu_Sgtmu_k)`?

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