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I just dont understand this!!!!!!!Please answer .......................

I just dont understand this!!!!!!!Please answer .......................

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Grade:12

1 Answers

DR STRANGE
212 Points
6 years ago
use this  formula
Young’s Modulus = stress/strain = (Mg/pi*r2)/(l/L) = MgL/pi*r2l
M= weight attached
g= acceleration due to gravity
L= length of wire
r=radius of wire = (diameter)/2
l= change in the length after attaching the weight
just put the given values :)

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