HW 5 - lie(el7352 – WH05 – markert –(56480 1 This...

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Unformatted text preview: lie (el7352) – WH05 – markert – (56480) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A force F is exerted by a broom handle on the head of the broom, which has a mass m . The handle is at an angle θ to the horizontal, as shown below. F θ What is the work done by the force on the head of the broom as it moves a distance d across a horizontal floor? 1. W = F m tan θ 2. W = F md sin θ 3. W = F d cos θ 4. W = F d sin θ 5. W = F m cos θ 002 10.0 points A cart loaded with bricks has a total mass of 15 . 3 kg and is pulled at constant speed by a rope. The rope is inclined at 20 . 3 ◦ de- grees above the horizontal and the cart moves 19 . 2 m on a horizontal floor. The coefficient of kinetic friction between ground and cart is . 594. The acceleration of gravity is 9 . 8 m / s 2 ....
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This note was uploaded on 01/18/2012 for the course PHYSICS 302K taught by Professor Irenepolycarpou during the Fall '09 term at University of Texas.

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HW 5 - lie(el7352 – WH05 – markert –(56480 1 This...

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