A cylinder rolls down a hill and around a loop as shown. It starts from rest at pointA. When it arrives at point B, it has a non-zero angular velocity and a non-zeroangular acceleration.cylinderstartB@ at B is Oa at B isi@ at B is Oa at B isii@ at B is Oa at B is Oiii@ at B is Oa at B is OivQuestion: Which choice properly describes the direction(s) of the angular velocity oand angular acceleration a?O (i)O (ii)O (iii)O (iv)

For rolling motion frictional force should present.

Answered: A cylinder rolls down a hill and around…

A cylinder rolls down a hill and around a loop as shown. It starts from rest at point A. When it arrives at point B, it has a non-zero angular velocity and a non-zero angular acceleration. aulinde.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 42P: A vertical wheel with a diameter of 50 cm starts from rest and rotates with a constant angular...

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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 cylinder rolls down a hill and around a loop as shown. It starts from rest at point
A. When it arrives at point B, it has a non-zero angular velocity and a non-zero
angular acceleration.
cylinder
start
B
@ at B is O
a at B is
i
@ at B is O
a at B is
ii
@ at B is O
a at B is O
iii
@ at B is O
a at B is O
iv
Question: Which choice properly describes the direction(s) of the angular velocity o
and angular acceleration a?
O (i)
O (ii)
O (iii)
O (iv)

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