InterviewSolution
Saved Bookmarks
| 1. |
A wire elongates by 8 mm when a load of 9 kgis suspended from it. What is the elongationwhen its radius is doubled, if all other quantitiesare the same as before?Ans. 2 mm] |
|
Answer» Young’s modulus Y = Force x L / A x l Or rewriting we have Y = WL/Al \l= WL/ AY Since the length of the wire is on both sides of the pulley length L/2 will be on both sides. Thus the elongation of the wire in mm is l mm. hence answer is 2mm |
|