Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 18 (Q.No. 8)
8.
At what distance from left support of the beam, is the shear force zero ?
Discussion:
3 comments Page 1 of 1.
Santu naskar said:
8 years ago
Answer is C.
Take a support at the left end then the reaction will be 45/2 and at 2 m right sf will be 45/2 -15*2 = -15/2 then draw sf diagram according to properties of triangle let sf will be 0 at x distance then 2x/45 = 2(2-x)/15 then x=6/4=1.5 m from left end.
Take a support at the left end then the reaction will be 45/2 and at 2 m right sf will be 45/2 -15*2 = -15/2 then draw sf diagram according to properties of triangle let sf will be 0 at x distance then 2x/45 = 2(2-x)/15 then x=6/4=1.5 m from left end.
Noman said:
5 years ago
@Santu Naskar.
How comes 45?
How comes 45?
Rahul said:
3 years ago
Find the reactions Ra = 22.5 Rb = 7.5.
And then consider SF=0 at x distance,
so Ra - Wx = 0.
22.5 - 15x = 0.
x = 1.5.
And then consider SF=0 at x distance,
so Ra - Wx = 0.
22.5 - 15x = 0.
x = 1.5.
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