Hey all, I'm new here. I like physics, but I have a hard time with it. It's frustrating because I have a problem of not knowing what all is going on in some problems. The physics tutor at my school is hard to get ahold of so I decided to look online for physics related items. I stumbled across this site and figured it would be a good place to refine my skills.(adsbygoogle = window.adsbygoogle || []).push({});

Well here is my question.

A train traveling at a constant speed rounds a curve of radius 235m. A lamp suspended from the ceiling swings out to an angle of 17.5 throughout the curve. What is the speed of the train?

I see that the speed of of the lamp=speed of the train. Since an angle is involved I initially thought it would be a banking problem, but without a weight to work with I decided that is probably didn't have to do with bankment.

Since the speed is constant does that mean acceleration is also constant in this case?

I know speed and velocity aren't the same in some cases, but I think the speed and velocity are the same in this situation.

I looked at the lamp as being at 270 degree's initially, and 17.5 was a reference angle (or maybe the 197.5 is the reference angle :p. I forget). So I added 17.5 and 180 to get 197.5 degree's if you were looking at it as a circle. I'm uncertain where to go from here.

Any help would be appreciated. Thanks

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# Homework Help: Circular Motion question. Need direction

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