Q: The shoes on the brake depicted in the figure subtend a 90 arc on the drum of this external pivoted-shoe brake. The actuation force P
(a) What should the dimension e be?
(b) Draw the free-body diagrams of the handle lever and both shoe levers, with forces expressed in terms of the actuation force P.
(c) Does the direction of rotation of the drum affect the braking torque?
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a Counterclockwise rotation 02 4 rad r 1352 675 in 4r sin 0 202 sin 20 b F L 3 R R 6375 a 4675 sin74 ... View full answer

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