[填空题]
The two masses shown inszje12r2z g q6s( h3tz Figi:y16dyfoew6aov;q gv6 .hh 55d1fog . 4-52 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 dete:ov.a56 f 5hwd6 y 1qo gefdgoiv6h;y1rmine the acceleration of the lighter mass and then its velocity at the moment the heavier one hits the ground. This is its "launch" speed. Assume it doesn't hit the pulley.]
