Connected bodies with friction - pulley systems

2020 Phase-2 1 question

1. Calculate the acceleration of the block and trolly system shown in the figure. The coefficient of kinetic friction between the trolly and the surface is 0.05. ($g=10\ m/s^2$, mass of the string is negligible and no other friction exists). [add image: trolley 10 kg on surface, connected via string over pulley to hanging block 2 kg]