Physics50Exam3W11

Physics50Exam3W11 - 3 e) Find the tension in the rope if F...

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DO NOT TURN THIS PAGE!!!! NAME: _________________________________________ PHYSICS 50 WINTER 2011 EXAM 3 MAKE SURE TO SHOW ALL WORK IN COMPLETE DETAIL. NO CREDIT WILL BE GIVEN IF NO WORK IS SHOWN!!!!!
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1 1. For the system shown below assume a massless, frictionless pulley. Take the coefficient of kinetic friction to be 0.2. (10 pts) a) Calculate the acceleration of the blocks. b) Calculate the tension in the string. c) Determine which direction the 17.0 kg mass moves. 17.0 kg 30 o
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2 d) A 24-kg child stands on a merry-go-round making 1rotation in 5.0 s. He is standing 1.5 m away from the axis of rotation. a) Calculate the frictional force on the child. b) If the child begins to slide when r = 1.9 m, calculate the coefficient of static friction.
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Unformatted text preview: 3 e) Find the tension in the rope if F = 12 N, m 1 = 3.0 kg, m 2 = 1.0 kg, and = 37. Take all contact surfaces to be frictionless. 4 f) The three connected blocks are pulled to the right on a horizontal frictionless surface by a force of magnitude T 3 = 65.0 N. Take m 1 = 12.0 kg, m 2 = 24.0 kg, and m 3 = 31.0 kg. a) Calculate the acceleration of the blocks. b) Calculate the tension T 1 and T 2 . 5 g) A 4.5 kg block is given an initial speed of 14 m/s up an incline plane of angle 45 . When the block has moved 8.0 m along the plane, the speed of the block has decreased to 5.2 m/s. a) Find the coefficient of kinetic friction between the block and plane. b) Calculate the maximum distance the block moves up the plane....
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This note was uploaded on 09/02/2011 for the course PHYS 50 taught by Professor Luna during the Spring '11 term at DeAnza College.

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Physics50Exam3W11 - 3 e) Find the tension in the rope if F...

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