Teach me to fish outward force ball on string

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The discussion focuses on calculating the outward force exerted by a 2-pound ball on an 18-inch string spun at 2000 RPM. The formula mentioned is F = M * V² / r, but the user seeks clarification on the calculations involved. They express a desire for a detailed, step-by-step explanation to understand the math for a project. Additional links to resources are provided, but the user emphasizes the need for a comprehensive example to learn effectively. The conversation highlights the importance of clear guidance in mastering physics concepts.
creationvger
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I am requesting a precise step by step calculation for the outward force of a 2 pound ball on an 18 inch string being spun at 2000 rpm.

I know it's F = M times V squared devided by radius; but I must be excluding something important in the formula.

I need it to learn the math for a project. If u will show me each step using english measurements I would be very thankful.
 
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Yes that did help in that I used the form to do math. However I'm not allways on the net; I have not yet, "learned" to fish. If someone would like to take the time to work the full math out providing me with a sample including clarification of each move, I would greatly appreciate it and gladly take it from there.. However I am thankful for ur help as I truly can use what u provided at the moment. Also 2 of ur addresses were the same. Did not know if u meant to put 3 up or not.. Once again, thank you.
 
Yes 2 are the same link, but I wanted to draw attention to both anchors on the page.
 
Got it and learned.. ThanX!
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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