1. A piece of dust finds itself on a CD. The spin rate of the CD is omega rpm, and the piece of dust is r cm from the center. The CD rotates for 2.5 minutes. (Ignore the forces and acceleration needed to set and keep the CD in motion; only consider the piece of dust) a) Which quantities are constant during the spinning of the dust particle along with the CD? Both Angular Velocity ar b) SET UP Using the notation 40 for angular displacement, 0 for angular position at time t, 0, for the initial angular position, w for angular velocity at time t, wo for the initial angular velocity, and a for the angular acceleration, and r for the distance of the particle from the center, determine what quantities are known and what are unknown. ● . Enter some known values below. t = 2.5 r=r a=0 W= wo min cm rad/s² rpm

1. A piece of dust finds itself on a CD. The spin rate of the CD is omega rpm, and the piece of dust is r cm from the center. The CD rotates for 2.5 minutes. (Ignore the forces and acceleration needed to set and keep the CD in motion; only consider the piece of dust) a) Which quantities are constant during the spinning of the dust particle along with the CD? Both Angular Velocity ar b) SET UP Using the notation 40 for angular displacement, 0 for angular position at time t, 0, for the initial angular position, w for angular velocity at time t, wo for the initial angular velocity, and a for the angular acceleration, and r for the distance of the particle from the center, determine what quantities are known and what are unknown. ● . Enter some known values below. t = 2.5 r=r a=0 W= wo min cm rad/s² rpm

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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4. A disc of radius 0.5 m starts from rest and accelerates with a constant angular acceleration of 1 rad/s. a. At the start, that is, when the angular velocity is initially zero: i. Calculate the tangential acceleration of a particle on the rim ii. Calculate the centripetal acceleration of a particle on the rim i. Calculate the linear acceleration of a particle on the rim b. From rest until it has turned through n/4 radians, i. What is the angular velocity of the disc? ii. How long will it take to reach this angular velocity? iii. Calculate the centripetal acceleration of a particle on the rim iv. Calculate the lincar acceleration of a particle on the rim. 3m c. From rest until it has turned through radians, What is the angular velocity of the disc? How long will it take to reach this angular velocity? Calculate the centripetal acceleration of a particle on the rim Calculate the linear acceleration of a particle on the rim. i. ii. iv.