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Grade 11Electromagnetic Induction

a metal beam supported at the two endsis loaded at the centre if Y is the youngs miodulus then the dipression at the centre is propational to
​A) 1/Y B)Y C)I/Y2 D) Y2

Profile image of aishwarya
7 Years agoGrade 11
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1 Answer

Profile image of Arun
7 Years ago
Depression in the beam is given by 
δ = WL³/4Ybd³ 
Where W is weight , L is length , b is breadth, Y is Young's modulus and d is depth also δ is depression in the beam.
Here it is clear that , 
Depression in the beam is inversely proportional to Young's modulus.
e.g., δ is proportional to 1/Y 
Hence option (A) is correct.