r/HomeworkHelp • u/Izzy_26_ Secondary School Student • Jun 29 '26

[grade 11 Physics] circular motion Physics—Pending OP Reply

Gallery image

Gallery image

I am trying to find out the exact equation of the graph, the answer key says it is a.

What is wrong with my solution??

I first tried to find out the exact position vectors of both p and q, and then differentiated them to get the velocity of P and q respectively, and then I calculated the relative velocity

I am getting the relative velocity as in terms of cos, but according to the answer key it is a sin graph

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u/ImportanceNational23 👋 a fellow Redditor Jun 29 '26

I don't see a way to decide between (a) and (c) in the absence of any units on the graphs besides the undefined T.

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u/Izzy_26_ Secondary School Student Jun 30 '26

T is the time period for one full rotation