A rotating disk of radius 0.50 m has an angular velocity w = 5t - 0.5. At t = 4.4 seconds, The magnitude of the the linear velocity of a point on the disk at a distant of 0.2 m from the axis of the disk is: O a. 7.7 m/s О b. 4.3 m/s O c. 5.2 m/s O d. 6.5 m/s О е. 3.4 m/s

A rotating disk of radius 0.50 m has an angular velocity w = 5t - 0.5. At t = 4.4 seconds, The magnitude of the the linear velocity of a point on the disk at a distant of 0.2 m from the axis of the disk is: O a. 7.7 m/s О b. 4.3 m/s O c. 5.2 m/s O d. 6.5 m/s О е. 3.4 m/s

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 43P: A circular disk of radius 10 cm has a contant angular acceleration of 1.0rad/s2 ; at t=0 its 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 rotating disk of radius 0.50 m has an angular velocity w = 5t - 0.5. At t = 4.4
seconds, The magnitude of the the linear velocity of a point on the disk at a distant
of 0.2 m from the axis of the disk is:
O a. 7.7 m/s
O b. 4.3 m/s
O c. 5.2 m/s
O d. 6.5 m/s
O e. 3.4 m/s
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