An electric motor rotating a workshop grinding wheel at a rate of 1.35 x 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.20 rad/s?.(a) How long does it take for the grinding wheel to stop?Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. s(b) Through how many radians has the wheel turned during the interval found in (a)?Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad

(a) How long does it take for the grinding wheel to stop? Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. C (b) Through how many radians has the wheel turned during the interval found in (a)?

(a) How long does it take for the grinding wheel to stop? Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. C (b) Through how many radians has the wheel turned during the interval found in (a)?

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 11P: A disk 8.00 cm in radius rotates at a constant rate of 1200 rev/min about its central axis....

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

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An electric motor rotating a workshop grinding wheel at a rate of 1.35 x 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.20 rad/s?.
(a) How long does it take for the grinding wheel to stop?
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. s
(b) Through how many radians has the wheel turned during the interval found in (a)?
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad

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