Stuck on Physics Homework: Q3 Part C

[ehrenfest]

Homework Statement

http://www.physics.oregonstate.edu/~mcintyre/COURSES/ph429_S06/hw1.pdf

See question 3. I am really stuck trying to answer part c. I looked over the solutions to parts a and b and I really just cannot figure out what is going on. This is very weird.

Homework Equations

The Attempt at a Solution

 

[mjsd]

a rotating frame is not an inertial reference frame

 

[ehrenfest]

thanks, but I really don't see how that answers the question

In fact, I think that Marion and Thornton make an error in their book. There is no reason why the deflections should be in different directions. Does anyone have the book? If not, I can scan the relevant section which is like 2 pages long if someone agrees to read it.

 

[pam]

The Coriolis force is proportional to vector velocity, which changes sign.
You can also see this using conservation of angular momentum.