1. A flywheel starts from rest until it reaches a constant angular acceleration of 5 rad/s^2 after 3.0 s. Calculate (a) the angular speed and (b) the angular displacement (in radians) at this time.2. Rolando is driving a car on a circular track of radius 200 m. If his car moves at a constant linear speed of 50.0 m/s, calculate (a) its angular speed and (b) the magnitude of its acceleration. 1. A flywheel starts from rest until it reaches a constant angular acceleration of 5 rad/s? after 3.0 s. Calculate (a) the angularspeed and (b) the angular displacement (in radians) at this time.2. Rolando is driving a car on a circular track of radius 200 m. If his car moves at a constant linear speed of 50.0 m/s,calculate (a) its angular speed and (b) the magnitude of its acceleration.

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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 4P

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1. A flywheel starts from rest until it reaches a constant angular acceleration of 5 rad/s^2 after 3.0 s. Calculate (a) the angular speed and (b) the angular displacement (in radians) at this time.

2. Rolando is driving a car on a circular track of radius 200 m. If his car moves at a constant linear speed of 50.0 m/s, calculate (a) its angular speed and (b) the magnitude of its acceleration.

1. A flywheel starts from rest until it reaches a constant angular acceleration of 5 rad/s? after 3.0 s. Calculate (a) the angular
speed and (b) the angular displacement (in radians) at this time.
2. Rolando is driving a car on a circular track of radius 200 m. If his car moves at a constant linear speed of 50.0 m/s,
calculate (a) its angular speed and (b) the magnitude of its acceleration.

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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