Two problems on rigid body dynamics

(Please refer attachment for detailed problem description) Problem 1 : The 40 kg disc is released from rest with the spring compressed. At the instant shown (see attachment) it has a speed of 4 m/s and the spring is unstretched. From this poinr determine the distance d that the disc moves down the 30 degree ramp before moment ...continues

Rigid body dynamics: Pulley and blocks, Angular acceleration of a plate.

I need a lot of help with these problems. Thanks

Problem solving

see attachment