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Get Full Access to University Physics - 13 Edition - Chapter 9 - Problem 17e
Get Full Access to University Physics - 13 Edition - Chapter 9 - Problem 17e

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# A safety device brings the blade of a power mower from an ISBN: 9780321675460 31

## Solution for problem 17E Chapter 9

University Physics | 13th Edition

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Problem 17E

A safety device brings the blade of a power mower from an initial angular speed of ?1 to rest in 1.00 revolution. At the same constant acceleration, how many revolutions would it take the blade to come to rest from an initial angular speed ?3 that was three times as great, ?3 = 3?1?

Step-by-Step Solution:

Solution 17E Step 1 of 2: Let be the initial angular speed and be the final angular speed to under a o displacement of with constant acceleration . Using the equation from the relation of kinematics, = 2 0 As the blade come to rest at the end, =0 and the angle will be the stopping angle, That is, 0 = 2

Step 2 of 2

##### ISBN: 9780321675460

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