Where is delta x in 1/2 kx^2?
Just do the calculations:
1) work= 1/2 k (5.11^2-4.11^2)
2) work= 1/2 k (6.11^2-5.11^2)
were you right?
is 100^2-90^2 the same as 10^2-0^2 ? Ans: Hardly.
The work required to stretch a certain spring from an elongation of 4.11 cm to an elongation of 5.11 cm is 32.0 J.
(a) Is the work required to increase the elongation of the spring from 5.11 cm to 6.11 cm greater than, less than, or equal to 32.0 J?
(b) Verify your answer to part (a) by calculating the required work.
Why would it not be the same? Isn't delta x the same in 1/2 kx2
2 answers
That's why I was getting it wrong. I kept using delta x which was one in both cases. Have I mentioned you are a lifeseaver.
1 answer