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# The double-block brake shown is applied to the fl ywheel by means of the action of the

ISBN: 9781118807330 401

## Solution for problem 6/50 Chapter 6/3

Engineering Mechanics: Statics | 8th Edition

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Problem 6/50

The double-block brake shown is applied to the fl ywheel by means of the action of the spring. To release the brake, a force P is applied to the control rod. In the operating position with P 5 0, the spring is compressed 30 mm. Select a spring with an appropriate constant (stiffness) k which will provide suffi cient force to brake the fl ywheel under the torque M 5 100 N?m if the applicable coeffi cient of friction for both brake shoes is 0.20. Neglect the dimensions of the shoes.

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ENGR 121 B Lecture Notes for 10/26/2016 Spencer Kociba ● Most efficient way of combining checks/conditions are if/else statements ○ If ○ Elseif ○ Elseif ○ Else ○ End ○ You can have multiple elseifs ● Example of switch case ○ Function grade=lettergrade_using_switch(quiz_score) ○ Switch score ■ Case 10 ● grade=’A’ ■ Case 9 ● grade=’A’ ■ Case 8 ● grade=’B’ ■ ….. ■ Otherwise ● grade=’F’ ○ End %ends the switch command ○ End %ends the function ● Menu (‘prompt for what you’re c

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