A uniform disk, a thin hoop, and a uniform sphere, all with the same mass and same outer radius are free to rotate about a fixed axis through its center. Assume the hoop is connected to the rotation axis by light spokes (with negligible mass). With the objects starting from rest, identical forces are simultaneously applied to the rims. Rank the objects according to their angular accelerations, least to greatest. O sphere, hoop, disk O hoop, sphere, disk O sphere, disk, hoop O disk, hoop, sphere O hoop, disk, sphere

A uniform disk, a thin hoop, and a uniform sphere, all with the same mass and same outer radius are free to rotate about a fixed axis through its center. Assume the hoop is connected to the rotation axis by light spokes (with negligible mass). With the objects starting from rest, identical forces are simultaneously applied to the rims. Rank the objects according to their angular accelerations, least to greatest. O sphere, hoop, disk O hoop, sphere, disk O sphere, disk, hoop O disk, hoop, sphere O hoop, disk, sphere

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 10.2CYU: Check Your Understanding A centrifuge used in DNA extraction spins at a maximum rate of 7000 rpm,...

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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.

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A uniform disk, a thin hoop, and a uniform sphere, all with the same mass and
same outer radius are free to rotate about a fixed axis through its center. Assume
the hoop is connected to the rotation axis by light spokes (with negligible mass).
With the objects starting from rest, identical forces are simultaneously applied to
the rims. Rank the objects according to their angular accelerations, least to
greatest.
O sphere, hoop, disk
O hoop, sphere, disk
O sphere, disk. hoop
O disk, hoop, sphere
O hoop, disk, sphere

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