16-02-09 Coefficient of thermal expansion

A cubical body has a coefficient of expansion a, b, c in the three perpendicular directions.

Find the coefficient fo volumetric expansion.

Assume whatever you think is not given!

7 Answers

a+b+c

proof?

hehehe

if a=b=c.. then Î³=3a (known result..) :P

l(1+aÎ”t)l(1+bÎ”t)l(1+cÎ”t)
l³(1+(a+b+c)Î”t+(ab+bc+ac)(Î”t)²+abc(Î”t)³)

rest terms are small so Î³=a+b+c

good work :)

pahla wala jada acha explanation tha.... a=b=c wala.. :P

yes for an objective paper

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