is it (mω2l2)/(12AY) [7][7]
An easy one...
Q.A rod is rotating about center with angular speed w. If the Young modulus of elasticity of rod is Y and length and cross sectional area is l and A respectively. Find the elongation in rod.
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11 Answers
i think i'm wrong, cud u post method plz
also plz try this http://targetiit.com/iit_jee_forum/posts/potential_difference_9184.html
din know the answer... sirf kuch q apne se de diye..
anyone ... willing to post soln.. or i have to solve...(12th ke baad kuch solve karne ka man nahi karta :P)
has any one did it ??
If yes then plz give ur answers here..just answer
eure the total elongation is not 2xdl.
u have to change the limits to -l to l
[7][7]
the elongation in upper part will be equal to elongation in lower part..
so I cant see where it is wrong.