(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://img534.imageshack.us/img534/6164/questionv.jpg [Broken]

2. Relevant equations

ω = dθ/dt

v = dS/dt

3. The attempt at a solution

I used the second expression for the tangential speed:

[itex]v = \frac{dS}{dt} = r \frac{d \dot{\theta}}{d t} = (b-ct) \frac{d(kt)}{dt}[/itex]

[itex]\therefore \ v(t) = (b-ct) k[/itex]

So is this a correct expression for speed as a function of time?

So when r=0, the velocity would also be 0?

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# Homework Help: Velocity in a Spiral Path

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