# Homework Help: Frame of reference help

1. Apr 20, 2004

### wikidrox

An observer standing on the observation deck of the CN tower watches a bird fly by a rotating merry go round on the ground. Draw the path of the bird's flight as seen by the observer, with the merry go round as the frame of reference. In order to account for the motion of the bird using the merry go round frame of reference, what must be introduced to satisfy Newton's law?

I included the diagram. This question should be easy but it is the way it is worded that throws me off. My initial thought was to connect each interval from the merry go round to the birds path, but I wanted to verify that this was right.

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2. Apr 20, 2004

### cookiemonster

Wait, wait, what?

"Draw the path of the bird's flight as seen by the observer [standing on the observation deck of the CN tower]." The CN tower is stationary, right? So we have to draw the path of the bird in a stationary reference frame (the observer's on the CN tower).

"With the merry go round as the frame of reference." So this is a rotating reference frame... But we already decided on the reference frame! What's going on?

cookiemonster

3. Apr 21, 2004

### wikidrox

exactly!
I don't understand how there can be 2 frames of reference. That is exactly how it is written in the book.
Does this question seem to be incorrect?

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