8.1 - MasteringPhysics: Assignment Print View

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Ch8_1 Due: 10:00pm on Monday, October 18, 2010 Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy [ Switch to Standard Assignment View] You should make a serious attempt at these problems before your October 18 workshop. You only have a couple of hours after the work shop to make final adjustments before the due time !! You will do poorly in the work shop if you are unprepared. !! If you need help consult the Help Blog and/or visit the help room. Ladybugs on a Rotating Disk Two ladybugs sit on a rotating disk, as shown in the figure (the ladybugs are at rest with respect to the surface of the disk and do not slip). Ladybug 1 is halfway between ladybug 2 and the axis of rotation. Part A What is the angular speed of ladybug 1? ANSWER: one-half the angular speed of ladybug 2 the same as the angular speed of ladybug 2 twice the angular speed of ladybug 2 one-quarter the angular speed of ladybug 2 Correct Part B What is the ratio of the linear speed of ladybug 2 to that of ladybug 1? Hint B.1 Relation between linear and angular speeds Hint not displayed Answer numerically. ANSWER: 2 Correct Part C What is the ratio of the magnitude of the radial acceleration of ladybug 2 to that of ladybug 1? Hint C.1 Radial (centripetal) acceleration of an object moving on a circle Hint not displayed Answer numerically. ANSWER:
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This note was uploaded on 03/06/2011 for the course PHY 121 taught by Professor Stephens during the Spring '08 term at SUNY Stony Brook.

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8.1 - MasteringPhysics: Assignment Print View

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