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A comment on A googol-to-one gear ratio [video]. Parent comment

Re:A googol-to-one gear ratio [video] by nostrademons on Friday March 06, 2020 @07:23PM (#22508708)
You would need a tremendous amount of torque to move the last gear, because gears multiply the angular velocity on one side and multiply the torque on the other. If it took one newton-meter (about the weight of one apple on a lever a meter away from the gear) to move the first gear, it would take a googol newton-meters applied at the other end of the device.
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Re:A googol-to-one gear ratio [video] by kibwen on Friday March 06, 2020 @08:11PM (#22508967)
> one newton-meter (about the weight of one apple on a lever a meter away

Aside, but I'm delighted to learn that one Newton is approximately one apple's worth of force. :)

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Re:A googol-to-one gear ratio [video] by iamaelephant on Saturday March 07, 2020 @02:06AM (#22510263)
Maybe if you have a very big apple. 1 nM is the force of 1 Newton (1kg on Earth) at 1 meter.
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Re:A googol-to-one gear ratio [video] by praptak on Saturday March 07, 2020 @02:46AM (#22510411)
Newton is 0.1 kg on Earth. (Approximately)
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Re:A googol-to-one gear ratio [video] by devenson on Saturday March 07, 2020 @02:45AM (#22510408)
you forgot g, 1kg weighs 9.8 newtons on Earth.
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Re:A googol-to-one gear ratio [video] by pmorais on Friday March 06, 2020 @11:02PM (#22509649)
It’s actually much worse than that because of reflected inertia. The inertia of the first gear as seen from the last gear is proportional to the square of the gear ratio
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