Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
1st Edition
ISBN: 9780078945830
Author: Charles William McLaughlin, Marilyn Thompson, Dinah Zike
Publisher: Glencoe Mcgraw-Hill
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Chapter 4.1, Problem 6PP
To determine

To calculate: the output work from the pulley system.

Expert Solution & Answer
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Answer to Problem 6PP

The output work from the pulley system is 63 J_ .

Explanation of Solution

Given data:

Input work on the pulley system, Win=75 J

Efficiency of the pulley system, e=84%

Formula used:

Efficiency Equation:

  e=WoutWin×100

Where e is efficiency of machine (as percentage), Win is the input work in joules and Wout is the output work in joules.

Calculation:

As per the problem,

  Win=75 Je=84%

Substitute the values of efficiency and input work in the rearranged efficiency equation to get output work:

  e=WoutWin×100Wout=e×Win100Wout=84×75 J100Wout=63 J

Conclusion:

The output work from the pulley system is 63 J_ .

Chapter 4 Solutions

Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)

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