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Power
Question

A body of mass m,  accelerates uniformly from rest to V1  in time  t1.  The instantaneous power delivered to the Body as a function of time ‘t’ is

Moderate
Solution

Acceleration   a   =   v1t1---(1)
   velocity   v  =  u+at = 0 + a t-----(2) substitute

                       v=at 

equation (1) in (2)
                             v  =  v1t1t ---------(3)
   power   p  =   F×V   
                          p  =   mav   --------(4)

substitute equations (3),(1) in (4)          
                        p  =   mv1t1v1t1t
       p  =    mv12tt12   
 

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