Need physics help with Wheels with blocks and inertia

Two objects are attached to ropes that are attached to wheels on a common axle as shown below. The two wheels are glued together so that they form a single object. The total moment of inertia of the two wheels is 45 kg · m2. The radii of the wheels are R1 = 1.1 m and R2 = 0.50 m.

(a) If m1 = 24 kg, find m2 such that there is no angular acceleration of the wheels.

___________ kg

(b) If 12 kg is gently added to the top of m1, find the angular acceleration of the wheels.

___________ rad/s^2

Find the tension in the rope holding m1.

___________ kN

Find the tension in the rope holding m2.

 ___________kN