Bucket Tying & Rope Selection for Faster Spins

  • Thread starter Thread starter hanako83
  • Start date Start date
  • Tags Tags
    Rope
AI Thread Summary
Using a single knot on the handle may not be the most effective method for tying a bucket to enhance spinning speed. Opting for a larger bucket can help create a bigger concave shape, reducing the need for high-speed spins. A longer rope can also facilitate prolonged spinning, allowing the water to achieve the desired paraboloid shape. Additionally, utilizing an old record player turntable set to 78rpm could provide an interesting alternative for achieving faster spins. Overall, experimenting with bucket size, rope length, and alternative spinning mechanisms may improve performance.
hanako83
Messages
1
Reaction score
0
Is there a better way to tie the bucket than single knot on the handle? Or type of rope to use...that would increase speed of the spin? Mine just don't spin that fast at all.. Plastic bucket.. The concave is quite small compared to some I've seen done before.. Any better way to set it up?
 
Physics news on Phys.org
Is it spinning long enough for the friction to get the water turning? You could try a bigger bucket. It won't need to spin as fast to get a big concave.
 
A very long rope will allow spinning to continue for longer - to allow the paraboloid shape to form and for other small perturbations to die out.

An old record player turntable, set to 78rpm is good - if you can find one.
 
The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
Thread 'Beam on an inclined plane'
Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
Back
Top