H.W (2):A single block brake, as shown in Fig. 25.39, has a drum diameter of 720 mm. If the brake sustains 225 N-m torque at 500 r.p.m.; find : All dimensions in mm. (a) the required force (P) to apply the brake for clockwise rotation of the drum; 900 360 (b) the required force (P) to apply the brake for counter clockwise rotation of the drum; (c) the location of the fulcrum to make the brake self-locking for clockwise rotation of the drum; and The coefficient of friction may be taken as 0.3. 40 RN [Ans. 805.4 N ; 861 N; 1.2 m; 11.78 kW] 720 I All dimensions in mm.
H.W (2):A single block brake, as shown in Fig. 25.39, has a drum diameter of 720 mm. If the brake sustains 225 N-m torque at 500 r.p.m.; find : All dimensions in mm. (a) the required force (P) to apply the brake for clockwise rotation of the drum; 900 360 (b) the required force (P) to apply the brake for counter clockwise rotation of the drum; (c) the location of the fulcrum to make the brake self-locking for clockwise rotation of the drum; and The coefficient of friction may be taken as 0.3. 40 RN [Ans. 805.4 N ; 861 N; 1.2 m; 11.78 kW] 720 I All dimensions in mm.
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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Question
![H.W (2):A single block brake, as shown in Fig. 25.39, has a drum diameter of
720 mm. If the brake sustains 225 N-m torque at 500 r.p.m.; find :
All dimensions in mm.
(a) the required force (P) to apply the brake for clockwise rotation of the
drum;
900
360
(b) the required force (P) to apply the brake for counter clockwise rotation of
the drum;
(c) the location of the fulcrum to make the brake self-locking for clockwise
rotation of the drum; and The coefficient of friction may be taken as 0.3.
40
RN
[Ans. 805.4 N ; 861 N; 1.2 m ; 11.78 kW]
720 I
All dimensions in mm.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a8c8e21-3af9-4419-8745-ef65ab3fc160%2F5411260d-c562-40e9-b484-f10f98f3da62%2Fya4e5jm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:H.W (2):A single block brake, as shown in Fig. 25.39, has a drum diameter of
720 mm. If the brake sustains 225 N-m torque at 500 r.p.m.; find :
All dimensions in mm.
(a) the required force (P) to apply the brake for clockwise rotation of the
drum;
900
360
(b) the required force (P) to apply the brake for counter clockwise rotation of
the drum;
(c) the location of the fulcrum to make the brake self-locking for clockwise
rotation of the drum; and The coefficient of friction may be taken as 0.3.
40
RN
[Ans. 805.4 N ; 861 N; 1.2 m ; 11.78 kW]
720 I
All dimensions in mm.
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