[LO 25.1, 21.4]A puck on a frictionless air hockey table has a mass of 5.0 g and is attachedto a cord passing through a hole in the surface as in the figure. The puck is revolving at adistance 2.0 m from the hole with an angular velocity of 3.0 rad/s. The cord is then pulledfrom below, shortening the radius to 1.0 m. The new angular velocity (in rad/s) is

Here , angular momentum will remain conserved Lin = Lout Angular momentum of a body moving in a…

to a cord passing through a hole in the surface as in the figure. The puck is revo distance 2.0 m from the hole with an angular velocity of 3.0 rad/s. The cord is t from below, shortening the radius to 1.0 m. The new angular velocity (in rad/s)

to a cord passing through a hole in the surface as in the figure. The puck is revo distance 2.0 m from the hole with an angular velocity of 3.0 rad/s. The cord is t from below, shortening the radius to 1.0 m. The new angular velocity (in rad/s)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter13: Rotation Ii: A Conservation Approach

Section: Chapter Questions

Problem 47PQ

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

[LO 25.1, 21.4]A puck on a frictionless air hockey table has a mass of 5.0 g and is attached
to a cord passing through a hole in the surface as in the figure. The puck is revolving at a
distance 2.0 m from the hole with an angular velocity of 3.0 rad/s. The cord is then pulled
from below, shortening the radius to 1.0 m. The new angular velocity (in rad/s) is

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