The Dawn Mission is closer to 400 kilogram to one kilogram of spheres; but we know that the small spheres stop the rotation the satellite. We also know from the double stop video; that those small spheres can fully restart the rotation of the satellite. That means that the small spheres in the Dawn mission yo-yo despin device have all the Newtonian momentum that was contained in the spin of the satellite. The spheres are moving 400 m/sec (if the spin was 1 m/sec); check the energy increase.

Quote from: Delburt Phend on February 22, 2017, 09:13:45 PM
The Dawn Mission is closer to 400 kilogram to one kilogram of spheres; but we know that the small spheres stop the rotation the satellite. We also know from the double stop video; that those small spheres can fully restart the rotation of the satellite. That means that the small spheres in the Dawn mission yo-yo despin device have all the Newtonian momentum that was contained in the spin of the satellite. The spheres are moving 400 m/sec (if the spin was 1 m/sec); check the energy increase.

There is no energy increase. You must go through your calculations again.
The velocity of the small balls is not multiplied with the relationship between the large and small ball, but multiplied with the square root of this relationship. 10kg ball at 1m/s use all its kinetic energy to accelerate a 1kg ball at 3.162277m/s (Not 10m/s as you suggest). Energy is conserved, and no gain is achieved. Sorry mate.


Vidar

Quote from: Low-Q on February 24, 2017, 03:37:28 PM
There is no energy increase. You must go through your calculations again.
The velocity of the small balls is not multiplied with the relationship between the large and small ball, but multiplied with the square root of this relationship. 10kg ball at 1m/s use all its kinetic energy to accelerate a 1kg ball at 3.162277m/s (Not 10m/s as you suggest). Energy is conserved, and no gain is achieved. Sorry mate.


Vidar

Sir Isaac was saying that the momentum is conserved, not  energy.
Consevation of the momentum is derived from the 3rd law of Newton.

I just video taped another cylinder and spheres arrangement.

When spun and released the system (cylinder and spheres) took four frames (4/240th sec) for the black square to move from one side to the other side.

The spheres quickly stopped the cylinder and then continued to unwrap. The spheres soon had the cylinder back up to full rational speed. It again took four frames for the black square to cross from side to side.

The mass of the cylinder is 972 grams: the mass of the spheres is 132 grams; for a total mass of 1104 grams.

The cylinder's rotation speed is 1.2 m/sec (from the four frames). 

This means that when the spheres contain all of the Newtonian momentum (and the cylinder is stopped) they must be moving 8.36 times (1104 g / 132 g) faster that the original speed = 10.03 m/sec.

Your calculation say the spheres are moving 2.89 times faster than the original speed; 3.47 m/sec; when the cylinder is stopped.

Your calculations say that 65% of the Newtonian momentum is missing when the smaller mass spheres restore the motion back to the cylinder. Ballistic pendulums prove that only Newtonian momentum can be given from small objects to larger objects. So your calculations show that the spheres do not have enough momentum to return the motion to the cylinder.

The motion of the cylinder is completely restored; so your hypothesis is false.

The energy increase is 836%

Great! Now just connect this up to a generator