Ape Strength: Myth vs Reality

[Spalea]

(01-22-2019, 02:43 AM)Shadow Wrote:

(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.

I used calculator which take note how dry wood is. I calculated weight based on quite dry wood, humidity about 20%. Fresh just chopped tree is naturally much heavier. I think, that you calculated weight of fresh tree.

Yes, I didn't take notice of the humidity. Anyway it would add a little bit weight.
For exemple 20 % humidity and density = 0,8:

Weigth = 0,2 X 0,14 X 1 + 0,8 X 0,14 X 0,8 = 28 + 89,6 = 117,6 kilos (instead of 112 kilos in case of dry wood). Reply