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Unformatted text preview: Thevalingam, Donald – Homework 6 – Due: Oct 30 2006, 11:00 pm – Inst: Eslami 1 This printout should have 12 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. The due time is Central time. I hope by now, you can feel the joy of solving more and more problems :) Good Luck! 001 (part 1 of 1) 10 points You place a box weighing 394 . 3 N on an in clined plane that makes a 41 . 4 ◦ angle with the horizontal. Compute the component of the gravita tional force acting down the inclined plane. Correct answer: 260 . 755 N. Explanation: Basic concepts θ W θ θ W W 1 The component of the gravitational force acting down the plane is the side opposite the angle θ , so W 1 = W sin θ keywords: 002 (part 1 of 1) 10 points In a certain system of units, 23 . 3 thumbs = 1 meter, 1 pause = 51 . 6 s , and 1 glob = 11 . 5 kg. The unit of force in this system is a perk (p). How many kiloperks (kp) are in 39 . 4 N? Correct answer: 212 . 546 kp. Explanation: Basic concept: The use of conversion factors. 1 N = 1 kg · m s 2 1 perk = 1 glob · thumb pause 2 Solution: N = kg m s 2 · 1glob 11 . 5 kg · 23 . 3 thumbs 1m · µ 51 . 6 s 1pause ¶ 2 ≡ glob · thumb pause 2 · 1kp 1000p ≡ kp keywords: 003 (part 1 of 1) 10 points An elevator starts from rest with a constant upward acceleration and moves 1 m in the first 1 . 7 s. A passenger in the elevator is holding a 5 . 5 kg bundle at the end of a vertical cord....
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This note was uploaded on 03/04/2010 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas.
 Spring '08
 Turner
 Physics, Work

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