Answered: A smoothie blender is spinning its…

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 2OQ

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A smoothie blender is spinning its blades at positive 6,800 rpm. When the motor is turned off the blades stop spinning over the course of 2 seconds.

Question 1: What is the angular acceleration of the blades? Please answer the question in rad/s^2

Question 2: How many revolutions do the blades complete as they come to a stop?

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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