- #1

chrispsu

- 23

- 0

Anyhow I have an online homework due at midnight and would love to have any help possible with this question before then.

Heres the problem...

The hour hand on a certain clock is 8.9 cm long. Find the tangential speed of the tip of this hand in µm/s.

I tried v= w(angular velocity)r

so v= 2pi*r/ (60)(60) and got 155.3µm/s

This however is incorrect and any help to lead me the right way is greatly appreciated :D

Im an A student in Physics but just don't grasp rotation as well as the other topics.

This question is probably very simple but it is just not clicking for me, maybe I am missing the correct formula to use?