Hello again, tonite I am working on more homework and I am stuck on a problem involving circular motion. Here's the question:(adsbygoogle = window.adsbygoogle || []).push({});

Q: A 24 kg child takes a ride on a fast Ferris wheel that rotates 4.5 times each minute and has a diameter of 19 m. (a) What is the centripetal acceleration of the child?

Ok so I would start out by turning 4.5 rev/min into rad/sec:

4.5 rev/min x [tex]\frac {1 min}{60 sec}[/tex] x [tex]\frac{2 \pi rad}{1 rev}[/tex] = [tex].3\pi \frac{rad}{sec}[/tex]

Then R = 9.5m

[tex]a_c[/tex]=[tex]\omega^2[/tex]R

[tex]a_c[/tex]=[tex]9.5(.3\pi)^2[/tex]

[tex]a_c[/tex] ended up being 8.44 m/s for me.

Is there something I'm doing wrong?

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# Homework Help: Circular Motion

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