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A 20 kg child slides down a 3.0-m-high playground slide.

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 3rd Edition | ISBN: 9780321740908 | Authors: Randall D. Knight ISBN: 9780321740908 69

Solution for problem 24E Chapter 11

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 3rd Edition

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 3rd Edition | ISBN: 9780321740908 | Authors: Randall D. Knight

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 3rd Edition

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Problem 24E

Problem 24E

A 20 kg child slides down a 3.0-m-high playground slide. She starts from rest, and her speed at the bottom is 2.0 m/s.

a. Describe the energy transfers and transformations occurring during the slide.

b. What is the change in the combined thermal energy of the slide and the seat of her pants?

Step-by-Step Solution:

Solution 24 E:

Step 1 of 2:-

The mass of the child is,

.

Height of the playground is,

.

Her speed at the bottom is,

.

a)

Here we have to describe the energy transfers and transformations in the process.

At the beginning, it has gravitational potential energy because of the height. Later on while coming down, the potential energy got converted into the kinetic energy and thermal energy. The thermal energy comes from the friction between her pant and the inclined plane.

Step 2 of 2

Chapter 11, Problem 24E is Solved
Textbook: Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Edition: 3
Author: Randall D. Knight
ISBN: 9780321740908

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A 20 kg child slides down a 3.0-m-high playground slide.