(b)
A double shoe brake as shown in the figure is capable of absorbing a
torque of 1500 N-m. The diameter of the brake drum is 400 mm and the
angle of contact for each shoe is 100%. If the coefficient of friction between
the brake drum and lining is 0.4, find (1) the spring force necessary to set
the brake and (ii) the width of the brake shoe, if the bearing pressure on
the lining material is not to exceed 0.3 N/mm2
S
S
For
250mm
100"
Fnt
Fo2
200mm
1
01
O
T
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