b. A cantilevered beam of length 120 mm, is 25 mm wide and 6 mm thick as shown in Figure 2. The beam is subjected to a fluctuating end load such that the ratio of the maximum bending moment to mean bending moment is 3. The yield stress of the beam material is 250 N/mm² and the endurance limit is 85 N/mm?. i Detemine the maximum permissible end load that can act on the beam without causing failure. ii If a factor of safety of 2.5 is now applied to the endurance stress, determine the maximum permissible end load on the beam. What is the ratio of the maximum permissible end load calculated in part 1b (ii) above to that calculated in part lb (i) above?

b. A cantilevered beam of length 120 mm, is 25 mm wide and 6 mm thick as shown in Figure 2. The beam is subjected to a fluctuating end load such that the ratio of the maximum bending moment to mean bending moment is 3. The yield stress of the beam material is 250 N/mm² and the endurance limit is 85 N/mm?. i Detemine the maximum permissible end load that can act on the beam without causing failure. ii If a factor of safety of 2.5 is now applied to the endurance stress, determine the maximum permissible end load on the beam. What is the ratio of the maximum permissible end load calculated in part 1b (ii) above to that calculated in part lb (i) above?

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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b. A cantilevered beam of length 120 mm, is 25 mm wide and 6 mm thick as shown in Figure 2. The beam is subjected to a fluctuating end load such that the ratio of the maximum bending moment to mean bending moment is 3. The yield stress of the beam material is 250 N/mm? and the endurance limit is 85 N/mm?. i. Determine the maximum permissible end load that can act on the beam without causing failure. ii. If a factor of safety of 2.5 is now applied to the endurance stress, determine the maximum permissible end load on the beam. iii. What is the ratio of the maximum permissible end load calculated in part lb (ii) above to the calculated in part 1b (i) above? Fluctuating end load 6 mm 120 mm
QUESTION 3 If the allowable bending stresses for a beam in one application is 6 kip/in2 in tension. The cross-section of the beam is W8 x 40. If the beam is 10 foot long and simply supported and has a concentrated load applied at x = 3 ft as shown below. • Generate the shear force and bending moment diagram in terms of P; • Based on the allowable maximum bending moment you just obtained above, calculate/ input the mazimm allowable value of the load P: please, pay attention to units, and calculate your answer to 1 decimal place.. 3 ft 7 ft kip.
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QUESTION 1 a) A beam is made of from three wood planks and connected together using screws as shown in Figure 1. The spacing between the serews is 150 mm and the beam is subjected to maximum shear of V,=- 250 N. Calculate the shear force in each screws. 220 mm 180 mm -Screws- 40 mm 40 mm 140 mm 40 mm Figure 1
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