Calculating Distance Traveled on a Rotating Wheel

[featherua08]

[SOLVED] Rotational Motion question!

Homework Statement

A wheel has a radius of 2.8 m. How far does a point on the circumference travel if the wheel is rotated through angles of 30 degrees, 30 radians, and 30 revolutions?

Homework Equations

The Attempt at a Solution

I tried to use s=2pie(r) & theta=s/r but neither worked.

This problem seems like it would be super easy, but I really have no idea how to do it! Help!

Thanks!

 

[Dick]

It is super easy. s=r*theta works if the angle is measured in radians. That makes the 30 radian part pretty easy. For the others you'll need to convert degrees and revolutions to radians.

 

[featherua08]

Thank you!