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If you sit in a rotating chair and take a bicycle tire and spin the tire, the chair will spin in the opposite direction.
A body of a helicopter with a single main rotor will spin in the opposite direction and uses tail rotor to counter balance this.
I did two experiments with fidget spinners. I took marble and placed it on the top of the spinner and spun it. I expected the marble to start spinning in the opposite direction, but nothing happened.
I took two spinners, stacked one on top of the other and spun the top one expecting the bottom to spin in the opposite direction, but this did not happened. I also spun the bottom one and the top one did nothing.
Why is this?
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>>8967603
because of the friction with the ground.
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The Jews
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>>8967603
The angular momentum is conserved since when you pushed it it pushes back on you, and you're firmly attached to the ground so you give the angular momentum to the Earth.
There's no force between the two stacked spinners so why would one of them spin when YOU put a force on the other?
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