Answered: An electric turntable 0.770 m in…

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 9CQ: Explain why centripetal acceleration changes the direction of velocity in circular motion but not...

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An electric turntable 0.770 m in diameter is rotating about a fixed axis with an initial angular velocity of 0.230 rev/s. The angular acceleration is 0.895 rev/s^2.

In 0.191 s, the angular velocity is 0.401 m/s, 0.0603 rev, tangential speed at 0.970 m/s.

What is the magnitude of the resultant acceleration of a point on the tip of the blade at time ð‘¡ = 0.191 s. Express your answer in meters per second squared.

An electric turntable 0.770 m in diameter is rotating
about a fixed axis with an initial angular velocity of
0.230 rev/s. The angular acceleration is
0.895 rev/s².
Review | Constants
What is the tangential speed of a point on the tip of the blade at time t = 0.191 s?
Express your answer in meters per second.
v = 0.970 m/s
Submit
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Part D
Correct
What is the magnitude of the resultant acceleration of a point on the tip of the blade at time t = 0.191 s?
Express your answer in meters per second squared.
跖 ΑΣΦ
a = 2.4
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m/s²

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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