Yeah, that's what I'm thinking. That's why it says fractional change in length - delta L could be changing, L could be changing, or both. But either way deltaL/L has to go down by half (I think)
Yeah, that's what I'm thinking. That's why it says fractional change in length - delta L could be changing, L could be changing, or both. But either way deltaL/L has to go down by half (I think)
I agree, it would decrease by half. When you say fractional length, it makes me think of the whole equation (delta L/L), which rearranged gives:
delta L/L=F/A * E. So, it would have to dec. by half if area is dbl'd.
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