question_answer

Two block of mass 8kg and 4kg are connected by a string as shown in the figure below. Calculate their acceleration, if they are initially at rest on the floor, when a force of 100N is applied on the massless pulley in upward direction \[(g=10\,m{{s}^{-2}})\]

A) \[0m/{{s}^{2}},\,0m/{{s}^{2}}\]

B) \[0m/{{s}^{2}},\,2.5m/{{s}^{2}}\]

C) \[1.25m/{{s}^{2}},\,2.5m/{{s}^{2}}\]

D) \[2.5m/{{s}^{2}},\,0m/{{s}^{2}}\]