Q5: The block brake, as shown, provides a braking torque of 360 Nm The diameter of the brake drum is 300 mm. The coefficient of friction is 0.3. Find: 1. the force (P) to be applied at the end of the lever for the clockwise and counter clockwise rotation of the brake drum, and 2. The location of the pivot or fulcrum to make the brake self-locking for the clockwise rotation of the brake dran 100 ( 4 μ sin 8 20+ sin20 T> (F₁) r Bearing Area A, b(2r sind) RN = (1 Brake drum

Q5: The block brake, as shown, provides a braking torque of 360 Nm The diameter of the brake drum is 300 mm. The coefficient of friction is 0.3. Find: 1. the force (P) to be applied at the end of the lever for the clockwise and counter clockwise rotation of the brake drum, and 2. The location of the pivot or fulcrum to make the brake self-locking for the clockwise rotation of the brake dran 100 ( 4 μ sin 8 20+ sin20 T> (F₁) r Bearing Area A, b(2r sind) RN = (1 Brake drum

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The following figure shows a belt brake system operating on a brake drum of the hoisting mechanism. It consists of a cylinder with a diameter of 325 mm, the end of which is the elastic belt connected to both ends of the elastic belt by a crank arm articulated at B and the angle of rotation = 225 degrees. And the coefficient of friction is 0.3 and the latching force is f. Find the necessary F to generate a torque of 350 on the cylinder while it is rotating in the direction shown? Note that s = c = 135mm a = 500mm. 35mm
Q2 In Figure Q2, C and D represent brakes that can be used to stop the rotation of either arm E or gear 4, one at a time. Determine the speed and direction of shaft B when shaft A rotating at 1000 rpm CW, while(a) brake C holds arm E ﬁxed.(b) brake D holds gear 4 ﬁxed.N2 = 90; N3 = 32; N4 = 154; N5 = 94; N6 = 28.
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Derive the expression for the braking torque
A single block brake, as shown, has a tangential braking force of 2500 N and normal force of 9000 N pressing on the brake block on the wheel. Which of the location of fulcrum x tc make the brake self-locking? 200 600- 100T 560 mm 670 mm Ⓒ 210 mm 720 mm RN F₁ Brake drum
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(d) The schematic arrangement of a braking system is shown in figure below. The load weighs 50 kN and moves downward with hoist drum speed of 19.1 rpm. The hoist drum diameter is 1 m. The load must be stopped within a distance of 3 m. Determine the initial braking power. Neglect the kinetic energy of rotation.
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Questlon 3 The simple handbrake shown in figure A has a drum diameter of 400mm and u = (a) 0.35. The angle of lap is 200°. Calculate the brake torque, for clockwise rotation of the drum, if a force of 200N is applied. The handbrake in Question (a) has now been changed to a differential brake, as in figure B. Determine if the drum will or will not lock up for clock wise rotation of the drum. (b) 200N 200
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