In this question use g=9.8g = 9.8g=9.8 m s−2^{-2}−2.
Particles A A\,A and B B\,B have masses 4 kg and m m\,m kg respectively. They are connected by a light inextensible string passing over a smooth fixed pulley, with one particle hanging freely on each side. The string is taut and its two sections are vertical.
The system is released from rest and A A\,A accelerates vertically downwards at 1.4 m s−2^{-2}−2.
Find the tension in the string.
Find the value of mmm.
Find the magnitude of the force exerted on the pulley by the string.