OHHH...it would make sense that the ball would have BOTH KE and PE at the top of the loop! I never took that into consideration! I think you are right! :D
Homework Statement
a ball with:
mass- .06722kg
diameter- 2.53cm
rolling down a track of length 1.26m.
Find a) the minimum height the track must be for the ball to go around the loop. Loop has a diameter/height of .3m
Like this:
The Attempt at a Solution
I did conservation of mechanical...
x - {ln[(e^x)(2 + 1/e^x)]}
rule of logs:
x - [ln(e^x) + ln(2 + 1/e^x)]
cancel out ln(e^x)
x - x - ln(2 + 1/e^x)
plug in the limit:
=infinity- 1 - ln(2)
=infinity
+infinity is the answer? when my calc says -infinity?
L'Hospitals problem...NEED HELP!
This problem is on a test that our teacher said we could research if we wanted...and we are finishing it tomorrow. I have NO CLUE how to approach it and need help!
Homework Statement
lim x->infinity
x - ln(1+2e^x)...