A mass of 4 kg goes down an incline at angle 27 degrees (see picture). Coefficient of kinetic friction of mass and incline is 0.195. A string with tension is on the mass and pulley (mass of 7 kg) with a radius of 0.11 m. The centre of the pulley rotates around a piece holding it in place. (ignore any static friction)

a) draw a free body diagram of this

b) find acceleration of the mass (m1)

c) Find angular acceleration of pulley

d) Find tension in the string