A cantilever beam PQ of length L m and cross-section B x D mm2 is subjected to UDL of w kN/m throughout the span. Another cantilever beam RS (made-up of same material) of length 2L m and cross-section 2B x 2D mm2 is subjected to same amount of UDL throughout the span. What is the ratio of deflection at the ‘free end’ for beam PQ to that of beam RS?

A cantilever beam PQ of length L m and cross-section B x D mm2 is subj

1.	A cantilever beam PQ of length L m and cross-section B x D mm2 is subjected to UDL of w kN/m throughout the span. Another cantilever beam RS (made-up of same material) of length 2L m and cross-section 2B x 2D mm2 is subjected to same amount of UDL throughout the span. What is the ratio of deflection at the ‘free end’ for beam PQ to that of beam RS?
A.	1
B.	8
C.	1/2
D.	1/8
Answer» B. 8

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