Two particles A and B of masses 4 kg and 3 kg respectively are connected by a light inextensible string which passes over a small smooth fixed pulley. The particles are released from rest with the string taut. When A has traveled a distance of 2 m, it strikes the ground and immediately comes to rest. Find the speed of A when it hits the ground.
Added by Elena B.
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We have two masses, A and B, connected by a string over a pulley. Mass A is 4 kg and mass B is 3 kg. They are released from rest, and we need to find the speed of A when it hits the ground after traveling 2 meters. Show more…
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Two objects are connected by a light string passing over a light, frictionless pulley as shown in Figure P8.7. The object of mass $m_{1}$ is released from rest at height $h$ . Using the isolated system model, (a) determine the speed of $m_{2}$ just as $m_{1}$ hits the ground. (b) Find the maximum height to which $m_{2}$ rises.
Two particles A and B have masses 0.4 kg and 0.3 kg respectively. The particles are attached to the ends of a light inextensible string. The string passes over a small smooth pulley which is fixed above a horizontal floor. Both particles are held, with the string taut, at a height of 1m above the floor as shown in the diagram above. The particles are released from rest and in the subsequent motion, B does not reach the pulley. (a) Find the tension in the string immediately after the particles are released. (b) Find the acceleration of A immediately after the particles are released. When the particles have been moving for 0.5s, the string breaks. (c) Find the further time that elapses until B hits the floor.
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