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Unformatted text preview: nichols (scn285) Homework #5 Erskine (58200) 1 This printout should have 19 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points There is friction between the block and the table. The suspended 3 kg mass on the left is moving up, the 2 kg mass slides to the right on the table, and the suspended mass 7 kg on the right is moving down. The acceleration of gravity is 9 . 8 m / s 2 . 3 kg 2 kg 7 kg = 0 . 14 What is the magnitude of the acceleration of the system? Answer in units of m / s 2 . 002 10.0 points The suspended 2 . 6 kg mass on the right is moving up, the 2 . 2 kg mass slides down the ramp, and the suspended 8 . 1 kg mass on the left is moving down. There is friction between the block and the ramp. The acceleration of gravity is 9 . 8 m / s 2 . The pulleys are massless and frictionless. 2 . 2 k g = . 1 7 37 8 . 1 kg 2 . 6 kg What is the tension in the cord connected to the 8 . 1 kg block? Answer in units of N. 003 10.0 points A block sits motionless on an inclined plane, held in place by friction. The plane could be tilted even more upwards and the block would remain motionless. M s Consider the following statements: I. The magnitude of the frictional force equals M g sin . II. The magnitude of the frictional force is less than M g sin . III. The magnitude of the frictional force is greater than s M g sin . IV. Static friction must vanish since the block is not moving....
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 Spring '08
 Turner
 Physics, Friction, Work

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