A 250 mm radius brake drum is shown in Figure 3. The total mass moment of inertia of the brake drum and the flywheel to which it is attached is 20 kgm?. The kinetic coefficient of friction between the drum and brake shoe is 0.4. The initial angular velocity of the system is 240 rpm in the clockwise direction. Determine the constant force that must be exerted by the hydraulic cylinder if the system is to stop in 75 revolutions. Based on the system geometry, indicate: Whether or not the system is self-energizing. Whether or not the system is self-locking and explain the implications of this for the system's operation.

A 250 mm radius brake drum is shown in Figure 3. The total mass moment of inertia of the brake drum and the flywheel to which it is attached is 20 kgm?. The kinetic coefficient of friction between the drum and brake shoe is 0.4. The initial angular velocity of the system is 240 rpm in the clockwise direction. Determine the constant force that must be exerted by the hydraulic cylinder if the system is to stop in 75 revolutions. Based on the system geometry, indicate: Whether or not the system is self-energizing. Whether or not the system is self-locking and explain the implications of this for the system's operation.

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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Concept explainers

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.

Question

A 250 mm radius brake drum is shown in Figure 3. The total mass moment of inertia of the brake drum and the
flywheel to which it is attached is 20 kgm?. The kinetic coefficient of friction between the drum and brake shoe
is 0.4. The initial angular velocity of the system is 240 rpm in the clockwise direction.
• Determine the constant force that must be exerted by the hydraulic cylinder if the system is to stop in 75
revolutions.
Based on the system geometry, indicate:
Whether or not the system is self-energizing.
Whether or not the system is self-locking and explain the implications of this for the system's operation.
150 mm
B
300 mm
250 mm
150 mm
Figure 3: Schematic of brake system

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