Sunday, October 30, 2011

UTexas HW7 #17

I might know how to start it, but I am completely winging it. Can anybody help me?

4 comments:

Dr. Winters said...

Give us a hint... How are you thinking of starting it? What have you tried so far? What kind of a problem does it look like to you?

B Walsh said...

Hmm...I think it might be an energy problem, and I think I should use the 2nd and 3rd diagrams to solve it, but I kind of get lost from there.

B Walsh said...

Or maybe solve for the force of friction and the kinetic energy?

B Walsh said...

Actually...I just got it. I looked at another post about 18 and I realized that mew times the force due to gravity times the displacement was equal to the difference in kinetic energy. Thanks anyway for making me think about it more.