Urgent Help Needed: Can't Figure Out Homework Problem

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The discussion revolves around a homework problem that the original poster is struggling to solve. Key hints provided include using the figure setup for part (a), applying the formula for velocity in part (b) by calculating the distance covered in one complete cycle, and addressing a potential error in part (c) regarding the equation for r. Participants emphasize the importance of showing work to facilitate further assistance. The thread highlights collaborative problem-solving in academic contexts.
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Can't figure this out! Urgent

Homework Statement


http://img222.imageshack.us/img222/2470/63809024.png


Homework Equations



No Idea...

The Attempt at a Solution


If anyone can solve this then i will be very grateful!
 
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hint for part (a)

use the setup in the figure



http://img189.imageshack.us/img189/9246/ed96dcopyy.jpg



hint for part(b)

you know that velocity = distance / time .. your time here is T (time for one complete cycle) so find the distance that the particle will cover during that time (i.e distance of one cycle) and substitute ..



hint for part (c)

hmmm .. i think your original questions is missing an r .. it should be in part (a) that you prove r = r cos(theta) i + r sin(theta) j ?? .. if there was such a mistake then this part should be straight forward ..




show your work , so if you got stuck at some point we can help ..
 
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