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A 500.0-g bird is flying horizontally at 2.25 m/s, not

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 95P Chapter 10

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 95P

A 500.0-g bird is flying horizontally at 2.25 m/s, not paying much attention, when it suddenly flies into a stationary vertical bar, hit-ting it 25.0 cm below the top (?Fig. P10.85?). The bar is uniform, 0.750 m long, has a mass of 1.50 kg, and is hinged at its base. The collision stuns the bird so that it just drops to the ground afterward (but soon recovers to fly happily away). What is the angular velocity of the bar (a) just after it is hit by the bird and (b) just as it reaches the ground?

Step-by-Step Solution:

Solution 95P Step 1: Step 2: Angular momentum before impact L = M (L h)V Bird bird bird Angular momentum of rod after impact 2 LRod = IRodw 1 1/3M RodL w 1 By conservation of angular momentum L = L Bird Rod So w 1 L Bird/Rod 2 w1= M birdL h)V bird1/3M RodL w 1 1.72 rad/s

Step 3 of 3

Chapter 10, Problem 95P is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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