 
                 
                InterviewSolution
 Saved Bookmarks
    				| 1. | 4. A uniform rod of mass m, length L, area ofcross-section A and Young's modulus Yhangs from the ceiling. Its elongation under its* own weight will beVmgLmgL2mg(1) Zero2AYAYs. The diagram shows a force-extensionAy(4) | 
| Answer» 3) is correct answer Hook’s Law: Stress = Young’s Modulus × strain ⇒F/A=Yδ/L⇒δ=FLAY dδ=dFxAY dF= centrifugal force due to mass of the element of length dx =dMxω2=MLxdxω2 dδ=MLdxω2x.xAY δ=∫L0Mω2LAYx2dx=Mω2L23AY 3) is the right answer of the following 2) is the correct answer 4) is the correct answer | |