Two objects (m, = 4.50 kg and my = 2.55 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 4.50.kg object is released from rest at a point h = 4.00 m above the table. (a) Determine the speed of each object when the two pass each other. (No Response) m/'s (b) Determine the speed of each object at the moment the 4.50-kg object hits the table (No Response) m/'s (c) How much higher does the 2.55-kg object travel after the 4.50-kg object hits the table? (No Response) mThree objects with masses m, = 7.8 kg, my = 14 kg. and my = 20 kg, respectively, are attached by strings over frictionless pulleys as indicated in the figure below. The horizontal surface exerts a force of friction of 30 N on my. If the system is released from rest, use energy concepts to find the speed of m, after it moves down 4.0 m. (No Response) my/'sIn order for Jane to return to base camp, she needs to swing across a river of width D that is filled with alligators. She must swing into a wind exerting constant horizontal force F, on a vine having length & and initially making an angle # with the vertical (see below figure). Take D = 45.0 m, F = 106 N, ( = 40.0 m, 0 = 48.0', and her mass to be 50.0 kg. Wind Jane Tarzan! (a) With what minimum speed (in mys) must Jane begin her swing to just make it to the other side? (If Jane can make it across with zero initial velocity, enter 0.) (No Response) m/'s (b) Shortly after Jane's arrival, Tarzan and Jane decide to swing back across the river (simultaneously). With what minimum speed (in m/'s) must they begin their swing? Assume that Tarzan has a mass of 80.0 kg (No Response) m/s