Q1: A wheel has an initial clockwise angularvelocity of 1Orad/s and a constant angularacceleration of 3rad/s?. Determine the number ofrevolutions it must undergo to acquire a clockwiseangular velocity of 15 rad/s. What time is required?Ans.: 3.32 rev, t = 1.67 sec.Q2: The angular position of a radial line in arotating disk is given by the clockwise angle 0 =2t3 – 3t2 + 4 where 0 is in radians and t is inseconds. Calculate the angular displacement A0 ofthe disk during the interval in which its angularacceleration increases from 42 rad/s? to 66 rad/s?.%3D-Ans.: A0 = 244 rad

According to the company policy I can give you only 1 question answer If want answer second question…

Q1: A wheel has an initial clockwise angular velocity of 10rad/s and a acceleration of 3rad/s2. Determine the number of revolutions it must undergo to acquire a clockwise angular velocity of 15 rad/s. What time is required? constant angular Ans.: 3.32 rev, t = 1. 67 sec.

Q1: A wheel has an initial clockwise angular velocity of 10rad/s and a acceleration of 3rad/s2. Determine the number of revolutions it must undergo to acquire a clockwise angular velocity of 15 rad/s. What time is required? constant angular Ans.: 3.32 rev, t = 1. 67 sec.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

Q1: A wheel has an initial clockwise angular
velocity of 1Orad/s and a constant angular
acceleration of 3rad/s?. Determine the number of
revolutions it must undergo to acquire a clockwise
angular velocity of 15 rad/s. What time is required?
Ans.: 3.32 rev, t = 1.67 sec.
Q2: The angular position of a radial line in a
rotating disk is given by the clockwise angle 0 =
2t3 – 3t2 + 4 where 0 is in radians and t is in
seconds. Calculate the angular displacement A0 of
the disk during the interval in which its angular
acceleration increases from 42 rad/s? to 66 rad/s?.
%3D
-
Ans.: A0 = 244 rad

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