(adsbygoogle = window.adsbygoogle || []).push({}); For the Doc...JK....some more questions using Centripetal Force

A motorcycle has a constant speed of 23.1 m/s as it passes over the top of a hill whose radius of curvature is 172 m. The mass of the motorcycle and driver is 364 kg. Find the magnitude of (a) the centripetal force and (b) the normal force that acts on the cycle.

I am confused on this one, I don't quite understand Vertical centripetal force as well as horizontal, any direction I should take to get started?

Thanks...

one last one:

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 18.5 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 157 m), the block swings toward the outside of the curve. Then the string makes an angle θ with the vertical. Find θ.

V=18.5 m/s

r = 157

I am confused on this one as well...it seems like there should be some tension involved or atleast a weight, but I am not succeeding.

Thanks

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# Homework Help: For the Doc JK some more questions using Centripetal Force

**Physics Forums | Science Articles, Homework Help, Discussion**