Using Energy and momentum conservation to derive the equation

AI Thread Summary
The discussion revolves around deriving the initial velocity of a pendulum bob based on the angle it swings through. The equation to be derived is V0=4.43mtotalL1/2{1-cosΔθ}1/2/mball. Participants emphasize the need for a complete problem statement and suggest using a free body diagram to visualize forces. There is a call for relevant kinematic equations and clarification on the variables involved. Overall, the focus is on understanding the relationship between energy, momentum, and the pendulum's motion to derive the required equation.
Jenna
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Homework Statement


I need to find the intial velocity of a ball, given the angle the pendulum bob swings through.
I need to derive this equation.
[/B]
V0=4.43mtotalL1/2{1-cosΔθ}1/2/mball

Homework Equations

The Attempt at a Solution


I have barely any attempts since I can't even think where to start. How am I supposed to derive this using kinematics??
 
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Jenna said:
I need to find the intial velocity of a ball, given the angle the pendulum bob swings through.
That cannot be the whole question. Please state it exactly.
Jenna said:
barely any attempts
Nevertheless, you need to post what you have, and any thoughts.
A free body diagram, perhaps?
Jenna said:
Relevant equations
What standard equations do you think might be relevant?
 
A diagram is essential. Your statement of the problem is not complete. What is 4.43mTotalL, etc.? In what position does the pendulum start?
 
Try and draw a free body diagram and I'm sure there will be some kind of equation in your textbook or where you are learning this from.
 
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