At t=0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by 0(t) =(240 rad/s)t-(20.9 rad/s² )t2-(1.60 rad/s³ )t³.

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter7: Rotational Motion And The Law Of Gravity
Section: Chapter Questions
Problem 2WUE: Math Review (a) Convert 47.0 to radians, using the appropriate conversion ratio. (b) Convert 2.35...
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How fast was the motor shaft rotating at t = 0, when the current was reversed?
Calculate the average angular velocity for the time period from t=0 to t = 3.95.
Transcribed Image Text:. How fast was the motor shaft rotating at t = 0, when the current was reversed? Calculate the average angular velocity for the time period from t=0 to t = 3.95.
At
t=0 the current to a dc electric motor is reversed, resulting in an angular displacement
of the motor shaft given by 0(t) =( 240 rad/s)t—( 20.9 rad/s² )t²—( 1.60 rad/s³ )t³.
Transcribed Image Text:At t=0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by 0(t) =( 240 rad/s)t—( 20.9 rad/s² )t²—( 1.60 rad/s³ )t³.
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