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(Solved):   Problem 1: An internal rim-type brake having an inside rim diameter of \( 300 \mathrm{~mm} ...



Problem 1: An internal rim-type brake having an inside rim diameter of \( 300 \mathrm{~mm} \) and a dimension \( R=125 \mathr

 

Problem 1: An internal rim-type brake having an inside rim diameter of \( 300 \mathrm{~mm} \) and a dimension \( R=125 \mathrm{~mm} \) is shown. The shoes have a face width of \( 40 \mathrm{~mm} \) and are both actuated by a force of \( 2.2 \mathrm{kN} \). The drum rotates clockwise. The mean coefficient of friction is \( 0.28 \).


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Given , Diameter =d=300mm Then Radius =r=d2=3002=150mm a=R=125mm face width =b=40mm Force F=2.2kN Coefficient of friction = f=0.28 ?1=0o,?2=120,?a=90o
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