Homework Help: Physics

Posted by Max on Tuesday, February 14, 2012 at 11:11pm.

A rock stuck in the tread of a 50.0 cm diameter bicycle wheel has a tangential speed of 3.5 0m/s . When the brakes are applied, the rock's tangential deceleration is 1.40 m/s^2 .

What is the magnitudes of the rock's angular acceleration at = 1.70 ?

Physics - drwls, Wednesday, February 15, 2012 at 7:07am
1.70 what? You need to include units.

What does 3.5 0m/s mean ?

Divide tangential acceleration by radius R to get angular deceleration. You may not need the 3.5 and 1.70 numbers at all, whatever they mean.

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