Direction: A band brake consists of a lever attached to one end of the band. The other end of the band is fixed to the ground. The wheel has a radius of 200 mm and the wrap angle of the band is 270°. The braking force applied to the lever is limited to 100 N, and the coefficient of friction between the band and the wheel is 0.5. No other information is given.
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The maximum wheel torque that can be completely braked is
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- 200 N.m
- 382 N.m
- 604 N.m
- 844 N.m
- 200 N.m
Correct Option: B
Braking torque = (T1 – T2) × r
= (2101 – 200) × 2 = 382 N–m
