question_answer

A thin uniform rod of mass m moves translationally with acceleration a due to two antiparallel force of lever arm l. One force is of magnitude F and acts at one extreme end. The length of the rod is

A) \[\frac{2\left( F+ma \right)l}{ma}\]                      

B) \[l\left( 1+\frac{F}{ma} \right)\]

C) \[\frac{\left( F+ma \right)l}{2ma}\]                      

D) \[\frac{mal}{ma+F}\]