Ape Strength: Myth vs Reality

[Shadow]

(01-22-2019, 02:15 AM)Spalea Wrote:

(01-22-2019, 01:26 AM)Shadow Wrote:

(01-21-2019, 09:32 PM)Pckts Wrote: Watch the very beginning, there's no way to know the weight of the log but it's not light, the Gorilla moves it like nothing.

When gorilla is standing and keeping that log straight on the ground there is a way to calculate approximate weight. Gorillas are usually about 170 cm when standing, if big one 180 cm. So that log is most probably about 2 meters and then diameter about 30 cm. So volume of that log is approximately 0,14 cubic meter but let´s say 0,15.

That is also obviously quite dry wood when looking at it. When we know now approximate volume it is quite easy to look at possible weight. Spruce 65,5-68,5 kg. Birch would be 91-95 kg. Pine 73-76 kg.

If someone can give estimation about wood, then it is possible to give approximate weight for any log if there is some way to get approximate measurements :)

Same thing with rocks/stones, some estimations which will be quite close can be calculated.

If you say that volume is 0,14 cubic meter wood, with a density of 0,8, the weight would be 1000 X 0,14 x0,8 = 112 kilos
Density of 0,9 =>  weight = 126 kilos
Density of 0,7 => weigth = 98 kilos

Because very rare sorts of wood don't float on the water, I don't suppose that the density could be > 1. Even in this extreme case (density = 1), the weigth would be 140 kilos.

Example, Spruce 0,15 cubic meter and 20% humidity in tree, weight 68,5 kg. Spruce humidity 45% means just chopped, weight 82,5 kg. Really wet, lets say humidity 80% 102,6 kg.

Spruce, pine and birch are quite common trees and birch is quite hard wood. That´s why I made some examples of those trees. Upper weight in my estimation is with 20% humidity which means usually "air dried" tree. If tree is long time in sun, it might be even drier and that means lighter naturally. But difficult to say. 

Of course if that log would be 40 cm, then we would be talking most probably about weights a little bit over 100 kg. But I think, that it is quite safe to say, that this log looks like to be quite dry wood. Reply