posted by Lilly .
Two blocks are connected by a light string that passes over a frictionless pulley as in the figure below. The system is released from rest while m2 is on the floor and m1 is a distance h above the floor.
(a) Assuming m1 > m2, find an expression for the speed of m1 just as it reaches the floor. (Use any variable or symbol stated above along with the following as necessary: g.)
(b) Taking m1 = 6.1 kg, m2 = 4.5 kg, and h = 3.1 m, evaluate your answer to part (a).
(c) Find the speed of each block when m1 has fallen a distance of 1.2 m.