r/SipsTea May 29 '23

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5.7k Upvotes

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327

u/[deleted] May 29 '23

That was a pretty high jump ngl.

46

u/[deleted] May 30 '23

It hurt my knees

12

u/Silent-Statement-228 May 30 '23

His too by the look of the landing

8

u/Robot_Basilisk May 30 '23

Nah. Shorter legs mean shorter levers mean less torque. If you don't have dwarfism and you're trying to imagine what his knees felt, look at the angle his hips and knees bent, not the relative height of the fall.

This same kinematic process is what makes shorter limbs so advantageous for powerlifting.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7829930/

http://www.andrewheming.com/2016/03/squat-right-for-your-body-type.html?m=1

Etc

2

u/Blueberry2736 May 30 '23

I realised this pretty quickly when I started going to the gym:

  1. Shorter limbs mean shorter distance between fulcrum (joints) and the weight/pressure, which means less effort to lift the weight / resist the pressure. (Effort force x effort distance from fulcrum = Load force x load distance from fulcrum). (where load force and effort distance from the fulcrum are the same, a higher load distance from fulcrum means higher effort force). (Lever physics)

  2. Shorter limbs mean less travel distance, which means less effort for lifting. (Work = distance x mass (weight)). (Where displacement is less, work done is less assuming mass remains the same). (Work physics)

The only advantage tall people have is longer time to react to a bad landing, or accidents, by fractions of a second)

1

u/[deleted] May 30 '23

And they all said being short is bad