A ball is tied to a string and whirled in a horizontal circle at a constant 4 revolutions per second. Categorizethe following according to whether they are 0 in value, constant in value, or change:v: linear speed (scalar)v. linear velocity (vector)a: radial (centripetal) acceleration (scalar)a: radial (centripetal) acceleration (vector)u angular speed (scalar)w angular velocity (vector)a angular acceleration (scalar)a angular acceleration (vectorconstant and non-zeroconstant and 0non-constantradial acceleration (scalar)radial acceleration (vector)angular velocity (vector)linear velocityangular acceleration (vector)linear speedangular speedangular acceleration (scalar)

Given:A ball is moved in a horizontal circle with 4 revolutions per second.

Answered: A ball is tied to a string and whirled…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 103A

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An ultracentrifuge accelerates from to 100,000 rpm in 2.00 min. (a) What is the average angular acceleration in rad/s2 ? (b) What is the tangential acceleration of a point 9.50 cm from the axis of rotation? (c) What is the centripetal acceleration in m/s2 and multiples of g of this point at full rpm? (d) What is the total distance travelled by a point 9.5 cm from the axis of totation of the ultracentrifuge?
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