1) A wheel is rotating at a rate of 2.7 revolutions every 3.0 s. Through what angle, in radians, does the wheel rotate in 1.0 s?(adsbygoogle = window.adsbygoogle || []).push({});

I tried to solve this problem by:

{a} 360 x 2.7 = 972

{b} 972 / 3 = 324

{c} 364 / (180 / Pi) = 5.65

Yet, 5.65 is not the answer. The rust coated around the section of my brain labeled 'Trigonometry' is probably the culprit here.

2) A highway curve has a radius of 127 m. At what angle should the road be banked so that a car traveling at 27.5 m/s has no tendency to skid sideways on the road? [Hint: No tendency to skid means the frictional force is zero.]

I have no train of logic on this problem because I'm utterly spellbound. I feel as if perhaps I'm minus an essential formula, though.

Any suggestions or advice would be a godsend.

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# Two Problems Dealing With Circular Motion

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