In the Atwood machine discussed in Example 5.9 and shown in Figure 5.14a, m1 = kg and m2 = 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 vi = m/s downward. (a) How far will m1 descend below its initial level? (b) Find the velocity of m1 after s.