the merry-go-round and manages to sit down on the edge. What is the new angular speed of the merry-go-round? 9.16 There is no external torque applied to the child/merry-go-round system. What quantity will be conserved in this case? rev/min Need Help? Watch It Additional Materials

the merry-go-round and manages to sit down on the edge. What is the new angular speed of the merry-go-round? 9.16 There is no external torque applied to the child/merry-go-round system. What quantity will be conserved in this case? rev/min Need Help? Watch It Additional Materials

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 46P: A playground merry-go-round of radius R = 2.00 m has a moment of inertia I = 250 kg m2 and is...

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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

A playground merry-go-round of radius R = 1.60 m has a moment of inertia I = 255 kg · m² and is rotating at 12.0 rev/min about a frictionless vertical axle. Facing the axle, a 22.0-kg child hops onto
the merry-go-round and manages to sit down on the edge. What is the new angular speed of the merry-go-round?
9.16
There is no external torque applied to the child/merry-go-round system. What quantity will be conserved in this case? rev/min
Need Help?
Watch It
Additional Materials

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