Language: 
To browser these website, it's necessary to store cookies on your computer.
The cookies contain no personal information, they are required for program control.
  the storage of cookies while browsing this website, on Login and Register.

GDPR and DSGVO law

Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Google Search

Custom Search

Author Topic: re: energy producing experiments  (Read 95044 times)

Floor

  • Guest
Re: re: energy producing experiments
« Reply #270 on: December 14, 2021, 03:03:49 AM »
 oops

Offline kolbacict

  • Hero Member
  • *****
  • Posts: 793
Re: re: energy producing experiments
« Reply #271 on: December 14, 2021, 03:07:43 PM »
Quote
You’re creating a situation of constant gravitational acceleration,
by tilting the axis of rotation.
Quote
Another example is a small child moving a 3000lb barell of water.
Well, in a straight horizontal line, we can move any mass  for any distance as long as there is no friction. Without doing work, if you have already given the body the initial acceleration.
Or am I wrong, and this machine nevertheless works? ;)

Floor

  • Guest
Re: re: energy producing experiments
« Reply #272 on: December 14, 2021, 04:09:02 PM »
The physics are the same as rolling a marble around in the interior of a bowl.
One can build up and store kinetic energy in the form of momentum.



Offline Delburt Phend

  • Full Member
  • ***
  • Posts: 171
Re: re: energy producing experiments
« Reply #273 on: December 14, 2021, 08:26:27 PM »
Kinetic Energy can disappear; why not store momentum in the form of momentum.

Floor

  • Guest
Re: re: energy producing experiments
« Reply #274 on: December 15, 2021, 03:21:31 AM »
                   Momentum of an object is

               the mass of that object (Kilograms)   
                               multiplied by 
            that object's speed (meters per second).

             The direction of its motion is also a consideration
     (speed and direction, given together are the objects velocity).

        Momentum is perhaps the most basic form of kinetic energy.

                             The kinetic energy of an object is given as...
                                              Ek = 1/2 M x V ^2
                                                          or
      kinetic energy = 1/2    times     the mass    times    the velocity squared.

          This is also the kinetic energy required to accelerate an object of
                            a given mass   to a   specific velocity.

The kinetic energy the object has (due to its motion), is the same amount of energy as
was needed to cause its acceleration it to that specific velocity.

 

Offline Delburt Phend

  • Full Member
  • ***
  • Posts: 171
Re: re: energy producing experiments
« Reply #275 on: December 15, 2021, 04:21:37 AM »
Incorrect: motion is caused by Force applied for a period of time. Ft

The product of force * time is linear momentum mv. not energy

Newtonian momentum is a conserved quantity; kinetic energy is not conserved.   

Floor

  • Guest
Re: re: energy producing experiments
« Reply #276 on: December 15, 2021, 04:34:47 AM »
No acceleration and no mass ?

edit ..  momentum = mass x velocity         p = mv
           and   
           force = mass x acceleration            F = ma

Delburt Phend quote
          "motion is caused by Force applied for a period of time."
end of Delburt Phend quote

                              or

           motion is caused by force applied for a distance

                    like i said

                   Momentum of an object is

               the mass of that object (Kilograms)   
                               multiplied by 
            that object's speed (meters per second).

             The direction of its motion is also a consideration
     (speed and direction, given together are the objects velocity).


Offline Delburt Phend

  • Full Member
  • ***
  • Posts: 171
Re: re: energy producing experiments
« Reply #277 on: December 15, 2021, 03:39:27 PM »
 Floor quote "This is also the kinetic energy required to accelerate an object of
                            a given mass   to a   specific velocity."

Motion is made by F applied to a mass not by kinetic energy

Offline Delburt Phend

  • Full Member
  • ***
  • Posts: 171
Re: re: energy producing experiments
« Reply #278 on: December 15, 2021, 03:45:30 PM »
Floor quote: "The kinetic energy the object has (due to its motion), is the same amount of energy as
was needed to cause its acceleration it to that specific velocity."

How is this statement consistent with ballistic pendulums?

Floor

  • Guest
Re: re: energy producing experiments
« Reply #279 on: December 15, 2021, 04:27:23 PM »
Floor quote "This is also the kinetic energy required to accelerate an object of
                            a given mass   to a   specific velocity."

Motion is made by F applied to a mass not by kinetic energy

You are correct, in so far as motion is caused by force, but forces are the manifestation of
energy.

The action of a force is a transferance of energy.  We measure the changes caused
by a force acting.  From those changes we calculate the energy of the event.  Energy cannot
be measured.  Only the changes caused by energy acting as a force, can be measured.

                             also ...
I should have stated THIS as "This is also the ENERGY required to accelerate an
object of a given mass to a specific velocity"  rather than "kinetic" energy.

    best wishes with your experiments
                 floor

Floor

  • Guest
Re: re: energy producing experiments
« Reply #280 on: December 15, 2021, 04:38:42 PM »
Floor quote: "The kinetic energy the object has (due to its motion), is the same amount of energy as
was needed to cause its acceleration it to that specific velocity."

How is this statement consistent with ballistic pendulums?

It is consistent, that is how. 

Unless we are examining in terms of other than ordinary physics / mechanics.

Offline Delburt Phend

  • Full Member
  • ***
  • Posts: 171
Re: re: energy producing experiments
« Reply #281 on: December 15, 2021, 10:00:37 PM »
A 5 kg mass moving 8 m/sec can collide with a 20 kg mass at rest. The input kinetic energy is 160 J and the output KE is 32 J.

To make 5 kg move 8 m/sec it takes an application of 9.81 N of force applied for 4.077 second.
 
To make 25 kg move 1.6 m/sec it takes an application of 9.81 N of force applied for 4.077 second.
 
The conserved quantity is Force * time:   Ft; but Ft is not a form of energy. 

Offline sm0ky2

  • Hero Member
  • *****
  • Posts: 3551
Re: re: energy producing experiments
« Reply #282 on: December 16, 2021, 03:53:42 AM »
It would be interesting to see an elastic collision take 4 seconds….


However, in the real world the 20kg mass has a moment of inertia
defined by the mass*radius^2
And the momentum of the smaller mass is transferred in a fraction of a second

Want to see this? Shoot a pool cue at a bowling ball

Floor

  • Guest
Re: re: energy producing experiments
« Reply #283 on: December 16, 2021, 02:51:36 PM »
quote
"It would be interesting to see an elastic collision take 4 seconds…."
end of the quote

! was thinking of an experiment along these lines, (in another topic).

explanation ...

1. Place a section of copper tube or a thick roll of aluminum foil upon a digital weight scales,
with the long axis vertical. Note its weight.

2. Drop a powerful neodymium magnet into the tube and note the weight as
the magnet falls through the tube.

3. Note the weight of both the tube and the magnet when the magnet is at rest
at the bottom of its descent / resting on the scale.


It is probably a good idea to isolate the magnet from contact with or very near
proximity to the weight scales (as it might damage the scales).

I am pretty certain that less weight will register during the magnets descent than
when the magnet is at rest at the bottom of the tube.

             What are your opinions ?

Floor

  • Guest
Re: re: energy producing experiments
« Reply #284 on: December 16, 2021, 03:05:33 PM »
4. Next place the magnet upon a vertical, wooden, dowel rod, upon the scales.

5. Drop the the tube around / over the magnet.

6. Use a tubular copper wire coil, first shorted then not shorted.

             P.S.
Hope this hasn't drifted too far off topic.
   best wishes
            floor