Given: mechanism consists of 4 members: (1) block 1 of mass m1=18kg; (2) homogeneous disk 2 of mass m2=14kg and radius R2=40cm; (3) homogeneous disk 3 of mass m3=8kg and radius R3=45cm (4) block 4 of mass m4=15kg.
Mechanism is moving in vertical plane from the state of rest under the action of gravity forces.
Find: absolute value of acceleration of block 1 (in m/s2) a1=?