Hondero
Senior Member
Offline
Posts: 463
MadridSPAIN
Gender:

Hi Yurek, I see that it has been created a group of support in your fight for the Guiness, so as you seem determined I´d like also to collaborate in the team. With respect to the weight of the projectiles, I think that with heavy projectiles the range is shorter. Let us suppose that the maximum muscular power that we can develop is transformed in the kinetic energy of the projectile:
Speeds of launching: For an optimal mass M: ˝ MV^2 For a double mass: ˝(2M)V^2,, V = V/1.2 (approx.)
Maximum reaches in vacuum: D = V^2/10 (approx),, D = D/1.4 (approx)
Air drag for spherical projectiles): F = K(S x V^2),, F = F/2.25 (approx)
For the optimal speed that we are considering, the air drag could be translated in a reduccion of the reach of 30 % aprox., reason why its diminution when using great projectiles affects less to the range than the increase of it by diminution of the weight of the projectile
Ranges in the air: D = (1 0.3) x V^2/10 = 0,7 x V^2 /10 D = (1 0.21) x V^2/10 = 0,54 V^2/10,, D= 1,3 D The range with the optimal projectile is a 30% greater than the one of double weight.
(I call optimal mass or projectil, the one of less weight that can get all the muscular power in the launching. Projectiles very small can´t do it).
Any way, an important aspect in the fight for the Guiness is to consider the relative influence of the different factors in play. To the optimization of the sling and the projectile I would give an importance of 15 % each and to the optimization of the technique of launching and to the muscular training 30 % each. I think that in general the muscular training is the main factor to develop. Gym, launching with great weights, etc. I think you have to publish in the forum your body measures for consideration of the support team, and evaluate your possibilities... It´s a joke.
Saludos
