Professional Application: A woodpecker’s brain is

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Problem 32PE Chapter 2

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 32PE

Professional Application: A woodpecker’s brain is specially protected from large decelerations by tendon-like attachments inside the skull. While pecking on a tree, the woodpecker’s head comes to a stop from an initial velocity of 0.600 m/s in a distance of only 2.00 mm. (a) Find the acceleration in m/s2 and in multiples of ? ? g(?g = 9.80 m/s2). (b) Calculate the stopping time. (c) The tendons cradling the brain stretch, making its stopping distance 4.50 mm (greater than the head and, hence, less deceleration of the brain). What is the brain’s deceleration, expressed in ?multiples of? g ?

Step-by-Step Solution:

Step-by-step solution 32PE Step 1 of 8 (a) From the equation of motion, Therefore, Here is the final speed, is the initial speed is the acceleration and is the distance. Step 2 of 8 Substitute for , for and for . Therefore, the deceleration is . Step 3 of 8 The deceleration in terms of g is, The deceleration in terms of g is . Step 4 of 8 (b) The formula to find the time interval is,

Step 5 of 8

Chapter 2, Problem 32PE is Solved
Step 6 of 8

Textbook: Physics: Principles with Applications
Edition: 6th
Author: Douglas C. Giancoli
ISBN: 9780130606204

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