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[-] Bach37strad@lemmy.world 36 points 8 months ago

Torque is a measurement of rotational force. Brooms would technically have thrust. If I remember my high school physics, a Broom would need at least 980 Newtons of thrust to liftoff your average sized witch.

[-] jaybone@lemmy.world 10 points 8 months ago

What’s an average sized witch?

[-] Player2@lemm.ee 14 points 8 months ago

Probably one with under about 980 Newtons weight

[-] Slovene@feddit.nl 14 points 8 months ago
[-] AliasVortex@lemmy.world 11 points 8 months ago

Assuming that's it's just the normal force of Earth's gravity at work on the witch, it's just a case of working Newton's second backwards with the gravitational "constant" acceleration ≈ 9.8 m/s²:

F = ma

980 N = m × 9.8 m/s²

980 / 9.8 = (m × 9.8) / 9.8, units omitted for text clarity

100 kg = m

In other words, op is assuming that an average size witch masses approximately 100kg (or about 220 lbs in fingers, knees, and toes units).

[-] Dagnet@lemmy.world 14 points 8 months ago

That's not enough for flight, only enough to nullify gravity. It makes sense OP would leave some trust for acceleration

[-] ByteJunk@lemmy.world 8 points 8 months ago

They'll flap their arms for propulsion

[-] nightofmichelinstars@sopuli.xyz 5 points 8 months ago

Using Hocus Pocus as a data sample, Bette Midler is the average sized witch.

[-] IndiBrony@lemmy.world 3 points 8 months ago

So no torque, then? Unless the witches are rotating so fast we can't perceive it with the human eye, like a car's wheels travelling alongside you at a particular speed.

this post was submitted on 04 Oct 2024
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