So true.
As some hold, what you do with your fingers on a bowling ball is similar to what the tip does at contact - duration and steering makes a difference.
Be well
Squirt. End Mass and Cue Flexibility.
- Thread starter LAMas
- Start date
So true.
As some hold, what you do with your fingers on a bowling ball is similar to what the tip does at contact - duration and steering makes a difference.
Be well
See 1:08 in this vid to see the shaft bend away from the CB.
https://www.youtube.com/watch?v=FTdflfh4GwU
https://www.youtube.com/watch?v=FTdflfh4GwU
^^^^^^^^^^^^^^^^^
Yes...
but do not forget & neglect the "inward" loading (bend) before the deflection.
That is what has been done in the past...
until this thread, I think.
We can not get down to one parameter in a complex occurrence...
As has basically been done in the past.
With the deflection also comes spin for the off center hit. A stiff shaft vs a flexible shaft with equal weight distribution. Which squirts the ball less & which spins the ball more & are they the same animal?
The collision on the 'soft' tipped cue stick (possibly with a flexible ferrule) with the ball has been 'treated' inappropriately as a hard substance collision for far too long when it is anything but that.
Best 2 Ya & Stay & Shoot Well,
Rick
Yes...
but do not forget & neglect the "inward" loading (bend) before the deflection.
That is what has been done in the past...
until this thread, I think.
We can not get down to one parameter in a complex occurrence...
As has basically been done in the past.
With the deflection also comes spin for the off center hit. A stiff shaft vs a flexible shaft with equal weight distribution. Which squirts the ball less & which spins the ball more & are they the same animal?
The collision on the 'soft' tipped cue stick (possibly with a flexible ferrule) with the ball has been 'treated' inappropriately as a hard substance collision for far too long when it is anything but that.
Best 2 Ya & Stay & Shoot Well,
Rick
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However... even without external resistance, there remains an internal resistance, by the object itself. An astronaut pushing a one-ton satellite out of the cargo bay of the space shuttle quickly finds that even though the satellite seems "weightless," it is not easily moved. Given a push by the astronaut, it will indeed start to move, but v-e-r-y v-e-r-y s-l o-w-l-y . It resists being put in motion, and once moving, it resists just as much being slowed down or stopped.
(In Newton's day, of course, no one had any experience in moving "weightless" satellites in orbit. However, people were quite familiar with the docking of ships and large boats. A heavy boat acts very much like a "weightless" satellite: the water supports its weight, but offers very little resistance to slow motion. And there too, when such a boat is pushed away from the dock, it starts moving very gradually: but once it is moving, it is just as hard to stop.)
Newton named that internal resistance inertia.
Obviously, inertia increases with the amount of matter. A bowling ball is harder to get moving and harder to stop than a hollow rubber ball of the same size.
The bowling ball is also heavier, that is, it is pulled downward with greater force: but weight is an effect of gravity, while inertia is not. The two seem to go together in some way,..
https://www-spof.gsfc.nasa.gov/stargaze/Snewton.htm
(In Newton's day, of course, no one had any experience in moving "weightless" satellites in orbit. However, people were quite familiar with the docking of ships and large boats. A heavy boat acts very much like a "weightless" satellite: the water supports its weight, but offers very little resistance to slow motion. And there too, when such a boat is pushed away from the dock, it starts moving very gradually: but once it is moving, it is just as hard to stop.)
Newton named that internal resistance inertia.
Obviously, inertia increases with the amount of matter. A bowling ball is harder to get moving and harder to stop than a hollow rubber ball of the same size.
The bowling ball is also heavier, that is, it is pulled downward with greater force: but weight is an effect of gravity, while inertia is not. The two seem to go together in some way,..
https://www-spof.gsfc.nasa.gov/stargaze/Snewton.htm
It was said that at the instant that the fluff on the cue tip touches the CB, the CB starts to move - physics. The high speed pics don't show this. The CB appears to be stationary and is not moving to the right or rotating as the tip starts to compress.
A few held that the tip force must overcome the CB's inertia while others held that the CB is moving but imperceptibly. Others held hat it wasn't the inertia but the friction of the mass of the CB resting on the cloth.
Even in space objects have mass. And if they have mass, they have inertia. That is, an object in space resists changes in its state of motion. A force must be applied to set a stationary object in motion.
Is the CB moving imperceptibly when the fluff of the tip touches the CB and starts to compress?
Is the CB stationary until it's inertia is overcome by the compressing fluff on the tip?
Is it not the inertia of the CB but the friction between it and the cloth that resist the fluff of the tip?
A few held that the tip force must overcome the CB's inertia while others held that the CB is moving but imperceptibly. Others held hat it wasn't the inertia but the friction of the mass of the CB resting on the cloth.
Even in space objects have mass. And if they have mass, they have inertia. That is, an object in space resists changes in its state of motion. A force must be applied to set a stationary object in motion.
Is the CB moving imperceptibly when the fluff of the tip touches the CB and starts to compress?
Is the CB stationary until it's inertia is overcome by the compressing fluff on the tip?
Is it not the inertia of the CB but the friction between it and the cloth that resist the fluff of the tip?
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