Rotational Velocity & Acceleration Video Lessons

Concept

# Problem: Your roommate is working on his bicycle and has the bike upside down. He spins the 62.0 cm-diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second.What is the pebble's speed? and what is the pebbles acceleration?

###### FREE Expert Solution

Tangential speed:

$\overline{){\mathbf{v}}{\mathbf{=}}{\mathbf{r}}{\mathbf{\omega }}}$, where r is the radius of rotation and ω is the angular speed.

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###### Problem Details

Your roommate is working on his bicycle and has the bike upside down. He spins the 62.0 cm-diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second.

What is the pebble's speed? and what is the pebbles acceleration?