In an Atwood machine m1= 2 kg and m2= 7 kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into motion at v1= 2.40 m/s downward.
a) How far will m1 descend below its initial level?
b) Find the velocity of m1 after 1.80 s?