Munazir Posted October 11, 2022 Posted October 11, 2022 I’m reading the final empire and Vin is running away from an Inquisitor “He’s so strong! Vin thought with horror. He was probably steadying himself by Pulling against the lantern brackets behind. However, the force of his Ironpulls was far more powerful than Kelsier’s had ever been.” I’m confused on how he’s steadying himself
Treamayne Posted October 11, 2022 Posted October 11, 2022 7 minutes ago, Munazir said: I’m reading the final empire and Vin is running away from an Inquisitor Quote “He’s so strong! Vin thought with horror. He was probably steadying himself by Pulling against the lantern brackets behind. However, the force of his Ironpulls was far more powerful than Kelsier’s had ever been.” I’m confused on how he’s steadying himself Newton's Laws of Motion. Similar to pushing against a large object in one direction while pushing something in the opposite direction. Since Allomancy transfers force with pushes and pulls according to second and third laws - a simple pull would transfer force to the Lurcher in proportion to the mass being pulled. By pulling a larger object, what force is generated is translated to the larger force allowing the allomancer to pull more strongly without affecting themselves. Note: (Spoilers if this isn't a re-read then you should ignore this part) Spoiler Part if this passage is "unreliable narrator." While there is likely a component of what Vin thinks is happening, much of the increased strength of an Inquisitor's pushes and pulls comes from Hemalurgy, of which Vin is not yet aware and does not understand (or she might have clued in to her earring if she realized it could be adding strength to her Bronze).
SpinningSky he/him Posted October 11, 2022 Posted October 11, 2022 When a "blue line" of an allomancer is "toggled", it creates a force attracting\repelling the center of mass of the allomancer to\from the center of mass of the connected metal object. The intensity of the force is the same on the item being pulled and the center of mass of the allomancer. If you ironPull something towards you, the attracting force will move both you an the item towards each other. If you're pulling something very small, say a coin, you will stay still and the coin will come towards you. If you're curious about the actual physics, the balance of forces looking only at inertia shows that given the same force of pull the acceleration is directly unproportional to the mass, so if the allomancer is 10 times heavier than the coin, the coin will accelerate 10 times faster towards him. (this is ignoring friction, which, intuitivly, stops the little motion the allomancer would suffer until static friction is 'broken') However if you ironPull something the same weight as you, both you and the item will meet at halfway, masses being the same. The solution to this is to apply another force in the opposite direction, much like holding on to a handle in the wall to better pull a rope in the other hand. Again trying to be a bit more scientific, you apply an equal force in the opposite direction to balance the force towards the other body and stop your center of mass from being accelerated. As the sum of forces applied on the center of mass of the allomancer is zero, the acceleration will be zero as well, allowing the allomancer to stay still (m*a = F) is this what you were asking or did I get lost in a magical physics rant? 1
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