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Topic: relative speeds between two moving objects
Replies: 2   Last Post: Sep 5, 2013 8:03 PM

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 sean Posts: 6 Registered: 12/13/04
relative speeds between two moving objects
Posted: Sep 5, 2013 6:11 PM

I was wondering if I could get some help on a math problem .
Im trying to find out what the correct answer would be for the
following problem.
A disc rotates about an axis at a constant speed of rotation.
On the disc is a capsule 'C' that will eject a ball 'B' onto a track.
For purposes here, as its a maths problem,lets say the ball
when released travels in a straight line, at a constant speed
tangentally away from the rotating disc holding the (rotating)
capsule. Now, given that the ball is moving at a constant speed
on the track in a straight line away from the rotating disc
and capsule. ... Is the ball also ...
A) moving away from the rotating capsule at a constant speed
or
B) moving away from the rotating capsule at a variable speed?

Its important here to stress that the capsule is rotating in a circle
and that the ball is moving in a straight line away from the(axis of)
the rotating disc with the capsule.
Is this a problem that can be solved easily with an either
A or B answer? Hopefully it can as Im convinced that the answer
is B but I cannot convince a few other people that Im right.
In my view its a simple problem to be solved but I
cannot seem to convince anyone else.!
In case youre wondering this isnt some of trick question
where Ill pop out with some ridiculous proviso to
trick anyone who responds. Its just a basic math geometry
question.