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Exploring Energy ConceptsAn object whose weight is 100 lbf

Fundamentals of Engineering Thermodynamics | 7th Edition | ISBN: 9780470495902 | Authors: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey ISBN: 9780470495902 50

Solution for problem 3P Chapter 2

Fundamentals of Engineering Thermodynamics | 7th Edition

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Fundamentals of Engineering Thermodynamics | 7th Edition | ISBN: 9780470495902 | Authors: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey

Fundamentals of Engineering Thermodynamics | 7th Edition

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Problem 3P

Problem 3P

Exploring Energy Concepts

An object whose weight is 100 lbf experiences a decrease in kinetic energy of 500 ft · lbf and an increase in potential energy of 1500 ft · lbf. The initial velocity and elevation of the object, each relative to the surface of the earth, are 40 ft/s and 30 ft, respectively. If g = 32.2 ft/s2, determine

(a) the final velocity, in ft/s.

(b) the final elevation, in ft.

Step-by-Step Solution:

Solution

Step 1 of 3

Consider an object whose weight is  which experience a decrease in kinetic energy  and an increase in potential energy of .

We need to find out the final velocity and the final elevation in  if the initial velocity relative to the surface of the earth of the object is  and the initial elevation relative to the surface of the earth of the object is .

Step 2 of 3

Chapter 2, Problem 3P is Solved
Step 3 of 3

Textbook: Fundamentals of Engineering Thermodynamics
Edition: 7
Author: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey
ISBN: 9780470495902

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Exploring Energy ConceptsAn object whose weight is 100 lbf