Posted by **Sandhya** on Thursday, October 30, 2008 at 6:30am.

A wheel of radius 0.5 m rotates with a constant angular speed about an axis perpendicular to its

center. A point on the wheel that is 0.2 m from the center has a tangential speed of 2 m/s.

(a) Determine the tangential speed of a point 0.4 m from the center of the wheel.

(b) Determine the tangential acceleration of the point that is 0.2 m from the center.

- physics -
**bobpursley**, Thursday, October 30, 2008 at 7:29am
Use the .5m radius to calculate the moment of inertia. Use the radius of .4 (or on b of .2) to find tangential speed (w*r)

- physics -
**Sandhya**, Thursday, October 30, 2008 at 8:27am
What is the role of Moment of inertia here?

Am I right if I say that the tangential speed is the same 2 m/s & the tangential acceleration zero ?

- physics -
**bobpursley**, Thursday, October 30, 2008 at 8:29am
You are correct. moment of inertia is not in the picture, acceleration tangential is zero. Good point.

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