Question

Consider the drum brake belaw Rotation 50 mm 110 Given y- 30° and a coefficient of friction of 0.3 between the shoe lining and the drum, calculate a) The mechanical advantage of the leading shoe b) The mechanical advantage of the trailing shoe If the coefficient of friction is increased to 0.5, calculate: c) Percentage change in the mechanical advantage of the leading shoe d) Percentage change in the mechanical advantage of the trailing shoe ANSWERS a) 0.86 b) 0.46 c) 131.4% d) 47.8%!

Answer 1

assune hot Co ef.ficent of fJadion μ-o.7 g e nechanicad ntage weigh a load Fonce 110 Sin30+ Ilocos .30 advanlage of acing shee

FH( ito sin io lso cesto) MA Fonce weight lood change he ne chanice advantage 从e leading 8hoe..% F o s (Iso-26 0

3 change lte neclanica/ advan,age of the eilling shoe 492% shoe