A ceiling fan with 83-cm-diameter blades is turning at 69 rpm Suppose the fan coasts to a stop 25 s after being turned off. Part A What is the speed of the tip of a blade 10 s after the fan is turned off? Express your answer to two significant figures and include the appropriate units. V= Value Submit Request Answer Part B Units ? Through how many revolutions does the fan turn while stopping? Express your answer using two significant figures. [VD ΑΣΦ 3 CE

A ceiling fan with 83-cm-diameter blades is turning at 69 rpm Suppose the fan coasts to a stop 25 s after being turned off. Part A What is the speed of the tip of a blade 10 s after the fan is turned off? Express your answer to two significant figures and include the appropriate units. V= Value Submit Request Answer Part B Units ? Through how many revolutions does the fan turn while stopping? Express your answer using two significant figures. [VD ΑΣΦ 3 CE

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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.

Question

A ceiling fan with 83-cm-diameter blades is turning at 69 rpm.
Suppose the fan coasts to a stop 25 s after being turned off.
Part A
What is the speed of the tip of a blade 10 s after the fan is turned off?
Express your answer to two significant figures and include the appropriate units.
V =
Submit
Part B
μA
Value
Request Answer
Units
Number of revolutions =
Through how many revolutions does the fan turn while stopping?
Express your answer using two significant figures.
?
ΠΑΣΦ
?

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Step 1: Determine the given variables

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Step 2: Calculate angular acceleration of blade

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Step 3: Calculate speed of tip of blade

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Step 4: Calculate number of revolution

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