Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 35)
35.
If a rectangular beam measuring 10 x 18 x 400 cm carries a unformly distributed load such that the bending stress developed is 100 kg/cm2. The intensity of the load per metre length, is
Discussion:
12 comments Page 2 of 2.
John parker said:
10 years ago
Correct option is (D) , 270 Kg.
George Zac said:
1 decade ago
The correct answer is 270 kg.
Bending Stress = f = M/Z (Moment / section Modulus).
100 kg/cm2 = (WL^2/8)/(1/6 bd^3) M = 100/6 x 10 x 18^2.
M = 54,000 Kg.cm - 540 Kg.m.
M = WL^2/8= 540.
W = 8 * M / L^2.
W = 8 * 540 / 4^2.
W = 270 Kg.
Bending Stress = f = M/Z (Moment / section Modulus).
100 kg/cm2 = (WL^2/8)/(1/6 bd^3) M = 100/6 x 10 x 18^2.
M = 54,000 Kg.cm - 540 Kg.m.
M = WL^2/8= 540.
W = 8 * M / L^2.
W = 8 * 540 / 4^2.
W = 270 Kg.
(3)
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