Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: Rs.

There are no items in this cart.
Continue Shopping
Ritika Kapoor Grade: 12

 in a ques.. it was given dat a wire is stretched 2 double its length.v had 2 find out stress in terms of Y , new radius etc..

my first question is wether d eqn dl/l =F/AY is valid here bcoz:area is changing significantly & dl is also large.?

secondly, do v calculate d new radius by using volume=constt => A1L1 =A2L2 or dis assumption dat volume is constt. evrytym in dis type of quesn. is wrong?

pls rply.

7 years ago

Answers : (1)

Prudhvi teja
83 Points

Dear Ritika

Yea your question is correct

In the question thy asked stress

and stress =  strain* Y(youngs modulus)  [HOOK'S LAW]

dl/l =F/AY  

this one is just derived from hooke's law useing stress os F/A

from hook's you can stress

'for radius use volume constant

Please feel free to post as many doubts on our discussion forum as you can.we will get you the answer and detailed  solution very  quickly.

All the best.

Askiitians Experts
Prudhvi Teja



Now you can win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian


7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!! Click Here for details