Acrobatic Force Calculator

Neither -- Static Hold Force is simply Base Weight (kg) plus Flyer Weight (kg) converted to a compression force, and the two inputs carry identical physical weight in that sum: each additional kilogram, on either partner, adds the same roughly 9.81 N to the total. Raising Base Weight (kg) by 10 kg increases the force by exactly the same amount as raising Flyer Weight (kg) by 10 kg. There's no training principle that makes one partner's mass count for more; it's a straight sum.

The flyer arrives at the same impact velocity regardless of how the catch is executed, because that velocity is set entirely by Toss Height (m) and gravity during the fall. What differs is how quickly the base brings that velocity to zero: cramming the same velocity change into a shorter Catch Duration (ms) requires a proportionally larger force, the same relationship that makes a stiff landing hurt more than "giving" with your knees. This is why coaches emphasize catching with bent arms and absorbing through the whole body rather than stopping the flyer abruptly.

No -- Static Hold Time (s) only feeds the Hold Fatigue Index, a rough proxy for cumulative strain (force multiplied by how long it's sustained), and does not change any of the instantaneous force values themselves. Static Hold Force (N), Push-Off Force (N), and Catch Force (N) are all peak or steady-state values determined by weight, toss height, and catch duration alone -- holding a position longer makes it more fatiguing, not more forceful at any given instant.

Catch Deceleration (G) expresses the catch force as a multiple of the flyer's own body weight rather than a raw number in newtons, which makes it comparable across flyers of different sizes -- a catch producing 3 G means the flyer experiences roughly three times their own body weight in deceleration force. This calculator reports the number but does not set a safety threshold for you: acceptable G-forces depend on the flyer's training level, conditioning, and the specific skill, and should be evaluated against guidance from a qualified coach, not a fixed cutoff.

Impact velocity from a fall follows v = sqrt(2 x g x h), a square-root relationship, not a linear one -- so doubling Toss Height (m) increases the impact velocity by only about 41%, not 100%, and Catch Force (N) grows by roughly that same proportion rather than doubling outright. Small increases in toss height still raise catch force, just with diminishing returns per additional inch of height compared to what a straight-line relationship would predict.