Conceptual Dynamics - Independent Learning

Linear Impulse-Momentum Principle - Example Problem 9.3-13

 

A demi-cannon weighing 3200 lb rolls, without resistance, down a hill (h = 9 ft). Once at the bottom of the hill, the cannon fires a cannon ball weighing 32 lb at a speed of 2300 ft/s relative to the cannon. What is the final velocity of the cannon?

 

 

Given:
  • Wc = 3200 lb
  • Wb = 32 lb
  • h = 9 ft
  • vb/c,3 = -2300 ft/s
  • state 1 = at rest on the top of the hill
  • state 2 = at the bottom of the hill before the cannon ball is shot out of the cannon
  • state 3 = at the bottom of the hill after the cannon ball has been shot out of the cannon

 

Find:
  • vc,3
Video solution:

 

The following video walks you through the solution to this problem. It is suggested that you try solving the problem first and then, if you have difficulties with the solution, watch the video for help.

 

 

Interactive solution:

 

This system conserves ...