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# Solved: Suppose a 350-g kookaburra (a large kingfisher ISBN: 9781938168000 42

## Solution for problem 18PE Chapter 7

College Physics | 1st Edition

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Problem 18PE

Suppose a 350-g kookaburra (a large kingfisher bird) picks up a 75-g snake and raises it 2.5 m from the ground to a branch. (a) How much work did the bird do on the snake? (b) How much work did it do to raise its own center of mass to the branch?

Step-by-Step Solution:

Solution 18PE

a.)

Step 1 of  2

The amount of work done by the bird in raising a snake from the ground to a branch can be calculated by equating the amount of work done to the gravitational potential energy of the snake at that height.

The gravitational potential energy PEs of the snake at a height h from the ground is Where, g = acceleration due to gravity = 9.8 m/s2

m = mass of the snake = 75 g = 75 10-3 kg

h = distance from the ground = 2.5 m

This potential energy is equal to the work done by the kookaburra on snake.

So,   Substitute 75 10-3 kg for m, 9.8 m/s2 for g, 2.5 m for h = ( 75 = 1.837 J

Therefore, the amount of work done by the kookaburra bird  on the snake is 1.837 J .

b.)

Step 2 of 2

##### ISBN: 9781938168000

The answer to “Suppose a 350-g kookaburra (a large kingfisher bird) picks up a 75-g snake and raises it 2.5 m from the ground to a branch. (a) How much work did the bird do on the snake? (b) How much work did it do to raise its own center of mass to the branch?” is broken down into a number of easy to follow steps, and 52 words. This textbook survival guide was created for the textbook: College Physics , edition: 1. This full solution covers the following key subjects: Bird, branch, snake, DID, much. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The full step-by-step solution to problem: 18PE from chapter: 7 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. College Physics was written by and is associated to the ISBN: 9781938168000. Since the solution to 18PE from 7 chapter was answered, more than 1999 students have viewed the full step-by-step answer.

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