The block brake, as shown in the figure, provides a braking torque of 376 N-m. The diameter of the brake drum is 258 mm. The coefficient of friction is 0.3. Find: a. The force (P), in Newtons, to be applied at the end of the lever for the clockwise rotation of the brake drum b. The force (P), in Newtons, to be applied at the end of the lever for the counter clockwise rotation of the brake drum; and c. The location of the pivot or fulcrum, in mm, to make the brake self-locking for the clockwise rotation of the brake drum.
The block brake, as shown in the figure, provides a braking torque of 376 N-m. The diameter of the brake drum is 258 mm. The coefficient of friction is 0.3. Find: a. The force (P), in Newtons, to be applied at the end of the lever for the clockwise rotation of the brake drum b. The force (P), in Newtons, to be applied at the end of the lever for the counter clockwise rotation of the brake drum; and c. The location of the pivot or fulcrum, in mm, to make the brake self-locking for the clockwise rotation of the brake drum.
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.61P
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The block brake, as shown in the figure, provides a braking torque of 376 N-m. The diameter of the brake drum is 258 mm. The coefficient of friction is 0.3. Find:
a. The force (P), in Newtons, to be applied at the end of the lever for the clockwise rotation of the brake drum
b. The force (P), in Newtons, to be applied at the end of the lever for the counter clockwise rotation of the brake drum; and
c. The location of the pivot or fulcrum, in mm, to make the brake self-locking for the clockwise rotation of the brake drum.
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