0

Guest

Courses New

One end of a horizontal thick copper wire of length 2L and radius 2R is welded to an end of another horizontal thin copper wire of length L and radius R. When the arrangement is stretched by applying forces at two ends, the ratio of the elongation in the thin wire to that in the thick wire is (a) 0.25 (b) 0.50 (c) 2.00 (d) 4.00

 One end of a horizontal thick copper wire of length 2L and radius 2R is welded to an end of another horizontal  thin copper wire of length L and radius R. When the arrangement is stretched by applying forces at two ends, the ratio of the elongation in the thin wire to that in the thick wire is
(a) 0.25
(b) 0.50
(c) 2.00
(d) 4.00

Grade:12th pass

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
9 years ago

Sol :- (c) y = F/p(2R)2/?l12L = F/pR2/?l2/L

? ?l2 /?l1 = 2 option (c) is correct

Think You Can Provide A Better Answer ?

Other Related Questions on Mechanics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More