• Support PF! Buy your school textbooks, materials and every day products Here!

Angle of deflection

  • Thread starter bob7
  • Start date
  • #1
9
0

Homework Statement


A ball with a mass, m1=0.24 kg, initially moves to the right with a speed of 5m/s. The first ball then has an elastic collision with a second ball with a mass of .56kg which is initially at rest. The second ball is suspended just above the table by a cord which is 1.5 meters long. Right after the collision occurs, m2 moves to the right with a speed of 3m/s.

How would I go about calculating the maximum angle of deflection (measured from the vertical) that a ball attached to a cord will achieve?


Homework Equations


In the first part of the question I had to find the mass of the second ball and the final velocity of the first ball. m2=.56kg and Final Velocity of m1 is -2m/s


The Attempt at a Solution

 
Last edited:

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
26,258
618
If you know the initial speed of m2, you know it's initial kinetic energy. When it reaches to the top of it's swing all of that will be converted to potential energy. How high does it go? Now use that to find the angle.
 
  • #3
9
0
now i found the height to be .46 meters. the length of the cord is 1.5 meters. And I need to find the angle in between the initial position (from it just hanging) to the final position (when it is in the air). Now that creates a triangle, but I cant figure out how to get at that angle. Thanks for all the help!
 
Last edited:
  • #4
Dick
Science Advisor
Homework Helper
26,258
618
You get at the angle by figuring out some sides and using trigonometry. What's the vertical side? What's the hypotenuse?
 

Related Threads for: Angle of deflection

  • Last Post
Replies
3
Views
6K
  • Last Post
Replies
1
Views
883
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
4
Views
3K
  • Last Post
Replies
0
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
706
  • Last Post
Replies
1
Views
1K
Top