This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Abd Elhai, Mohamed – Homework 9 – Due: Apr 14 2008, 9:00 pm – Inst: Dr Kevin Dean 1 This printout should have 16 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. The due time is Central time. This is ONLINE HOMEWORK No. 9 It is due by 06:00 AM Abu Dhabi Time on Tuesday 15 April (9:00 PM Monday 14 April, Texas time). 001 (part 1 of 2) 5 points The turntable of a record player rotates at a rate of 49 . 6 rev / min and takes 62 s to come to rest when switched off. Calculate the magnitude of its angular ac celeration. Answer in units of rad / s 2 . 002 (part 2 of 2) 5 points Calculate the number of revolutions it makes before coming to rest. Answer in units of rev. 003 (part 1 of 2) 5 points Four particles with masses 5 kg, 3 kg, 4 kg, and 5 kg are connected by rigid rods of negli gible mass at the corners of a rectangle. The origin is at the center of the figure. x y O ω 4m 8 m 5 kg 3 kg 4 kg 5 kg What is the moment of inertia about the yaxis? Answer in units of kg · m 2 . 004 (part 2 of 2) 5 points If the system rotates around the zaxis at an angular velocity of 7 rad / s, what is the kinetic energy of the system? Answer in units of J....
View
Full
Document
This note was uploaded on 02/16/2010 for the course PHYSICS 191262 taught by Professor Najafzadeh during the Spring '09 term at The Petroleum Institute.
 Spring '09
 NAJAFZADEH
 mechanics, Work

Click to edit the document details