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Unformatted text preview: harvey (jnh849) HW 5 riley (999942) 1 This print-out should have 18 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points A car is going up a hill when the driver hits the brakes. c a r v As the car slows to a stop, which vector di- agram below shows the the correct directions of all of the forces acting on the car? 1. 2. 3. 4. 5. None of these graphs are correct. 6. 7. 002 (part 1 of 2) 10.0 points A light, inextensible cord passes over a light, frictionless pulley with a radius of 12 cm. It has a(n) 13 kg mass on the left and a(n) 2 . 3 kg mass on the right, both hanging freely. Initially their center of masses are a vertical distance 3 . 1 m apart. The acceleration of gravity is 9 . 8 m / s 2 . 3 . 1 m 12 cm 13 kg 2 . 3 kg At what rate are the two masses accelerat- ing when they pass each other? Answer in units of m / s 2 . 003 (part 2 of 2) 10.0 points What is the tension in the cord when they pass each other? Answer in units of N. 004 (part 1 of 2) 10.0 points A 30900 kg sailboat experiences an eastward force 25700 N due to the tide pushing its hull while the wind pushes the sails with a force of 74200 N directed toward the northwest (45 westward of North or 45...
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This note was uploaded on 09/28/2010 for the course PHYS 111 taught by Professor Carroll during the Winter '08 term at Ursinus.
- Winter '08