sp08midterm - Midterm Exam, March 10, 2008 NAME: Units must...

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Unformatted text preview: Midterm Exam, March 10, 2008 NAME: Units must be included in final answers, where appropriate. Note on constants: Magnitude of gravitational acceleration = g = 9.8 m/s 2 Problem 1 60 60 T 2 T 1 A traffic light of mass 24 kg is supported by two wires as shown in the figure above. The wire that is more nearly vertical (- 60 ◦ from the horizontal bar) is under tension T 2 . The other wire (- 60 ◦ from the vertical bar) is under tension T 1 . What are the tensions T 1 and T 2 in the wires? Problem 2 7 m 30 A ball rolls down a roof that makes an angle of 30 ◦ to the horizontal. It rolls off the edge with an initial speed of 5 m/s. The distance to the ground from that point is 7.0 meters. a.) How long is the ball in the air? b.) How far from the base of the house does it land? c.) What is its speed just before landing? Problem 3 1 2 3 4 x, m Fx, N 2 4 6 8 A 3 kg particle is moving along the x-axis with a velocity of 2 m/s as it passes through x = 0. It is subjected to a single force F x...
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This note was uploaded on 03/03/2010 for the course PHYS 123 taught by Professor Laurent-muehleisen during the Spring '08 term at Illinois Tech.

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sp08midterm - Midterm Exam, March 10, 2008 NAME: Units must...

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