i) The angular displacement 0 radians of a flywheel varies with time t seconds and follows the equation 0 = 9t2 – 2t3.Determine, a)The angular velocity and acceleration of the flywheel when time, t =1 s. b) The time when the angular acceleration is zero.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.7: Applied Problems
Problem 67E
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i)
The angular displacement 0 radians of a flywheel varies with time t seconds and
follows the equation 0 = 9t? – 2t3.Determine,
a)The angular velocity and acceleration of the flywheel when time, t =1 s.
b) The time when the angular acceleration is zero.
ii)
The alternating current in an AC circuit, į amperes, is given by i = 20sin (2nft),
where f is the frequency in hertz and t the time in seconds. Determine the rate
of change of current when t=30ms, given that f =200HZ.
Transcribed Image Text:i) The angular displacement 0 radians of a flywheel varies with time t seconds and follows the equation 0 = 9t? – 2t3.Determine, a)The angular velocity and acceleration of the flywheel when time, t =1 s. b) The time when the angular acceleration is zero. ii) The alternating current in an AC circuit, į amperes, is given by i = 20sin (2nft), where f is the frequency in hertz and t the time in seconds. Determine the rate of change of current when t=30ms, given that f =200HZ.
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