3/4/09

Post date: Mar 06, 2009 2:25:54 AM

Bell Ringer: A bullet experiences a 1000N force while in the 0.75 m barrel of a rifle.

a) How much work is done on the bullet?

b) If the bullet is in the barrel for 0.02 seconds, what is the power of the gun?

- Finish notes on chapter 13, section 1
  - What is a machine?
  - How do machines help us do work?
  - How do we calculate the mechanical advantage of a machine?