Double Atwood's Machine In Fig. 5.85 masses ml and m2 are connected by a light string A over a light, frictionless pulley B. The axle of pulley B is connected by a second light string Cover a second light, frictionless pulley D to a mass m3 Pulley D is suspended from the ceiling by an attachment to its axle. The system is released from rest. In terms of ml m2, m3 and g, what are
(a) The acceleration of block m3;
(b) The acceleration of pulley B;
(c) The acceleration of block ml;
(d) The acceleration of block m2;
(e) The tension in string A;
(f) The tension in string C?
(g) What do your expressions give for the special case of ml = m, and m3 = ml + m2? Is this sensible?

m3 m2