- #1
punyhuman92
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Homework Statement
http://landau.physics.fsu.edu/capstick/teaching/2048C-Fall11/Final/Spring09.pdf
Homework Equations
U_g= mgh
K.E=1/2mv^2 + 1/2Iw^2
U_gi=KE_f
I=1/2MR^2
The Attempt at a Solution
I got as far as far as d then realized that i didn't do anything to include the friction, I am unsure how to include the friction.
For A i know the total kinetic energy at the bottom of the ramp has to be equal to the potential energy at the top but what I am not sure how to account for the energy lost by heat ie friction. how fast is the ball moving i would use mgh=1/2mv^2 + 1/2Iw^2 and plug in the inertia for a solid cylinder and solve for v
then i would plug v into find the angular velocity and would velocity to find momentum*r to find angular momentum.
then d says to assume there is no friction.
HELP !