[填空题]
The two masses shown in Fig. 4-sn.qya*kmo39/z k hh-2ivi56zvqwx 152 are each initially 1.80 m above the ground, and the massless frictionless pulley is 4.8 m above the ground. What maximum height does the lighter object reach after the system is released? [Hint: First determine the acceleration of the lighter mass and then its velocity at the moment the heavier one hits the ground. This is its "launch" vixv65wz1qi2 speed. Assume it doesn't hit the pulley.]
