A 1.00-kg glider on a horizontal air track is pulled by a

Chapter 5, Problem 76

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A 1.00-kg glider on a horizontal air track is pulled by a string at an angle u. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg as shown in Figure P5.76. (a) Show that the speed vx of the glider and the speed vy of the hanging object are related by vx 5 uvy, where u 5 z(z2 2 h0 2)1/2. (b) The glider is released from rest. Show that at that instant the acceleration ax of the glider and the acceleration ay of the hanging object are related by ax 5 uay. (c) Find the tension in the string at the instant the glider is released for h0 5 80.0 cm and u 5 30.0.