Well not everyone has to go back to this topic i was just giving correct information.
I'm afraid that you are not giving correct information. But please allow me to give you a crash course in the physics of weight distribution and pressure on a pendulum.
Swinging like Tarzan is completely possible if you're athletic! Unfortunately, swinging like Spider-man is completely different.
(The following explanation has been shamelessly ripped from a very well done post by Nolder.)
1.) Consider that Peter Parker is 100 kg (around 220 lbs). That's pretty heavy but it gives us some some safety room and it makes the calculation a whole lot easier.
2.) Many sources state the Spider-Man can go 80 mph. This seems pretty high considering a lot of roller coasters max out at arround that speed. It's a slow day; Spidey doesn't have anywhere to be for once. So he's just cruisin'. Let's say he's going 45 mph, or about 20 m/s
3.) Let's say his web is 9 or 10 storys long (9 or 10 floors) so its about 30 meters
We use this formula to calculate how much the web would actually have to hold
F = M(V^2)/R
M is the mass, which is 100 kg
V is the velocity, 20m/s
R is the radius (his swings are really a series of half circles) which is 30 meters
F = M(V^2)/R = 100 kg * (20 m/s) ^2 / 30 m = 10^3 N
1000 N or 1000 newtons is 224 pounds. But don't get all excited yet. We still have to add a gravitational force of:
Fg = MG = 10^3 N.
So it's really like his web has to hold 2 x 10^3 N, or 450 pounds. More than twice his weight.
Granted, this is for a 220 pound Peter Parker, but it doesn't take into account other variables AND this is him going at a relatively slow speed.
If,
A) He weighed more
B) He was swinging faster or
C) His web was shorter
The web would have to hold greater force.
Let me make it clear that if you weigh half that he does (110 lbs), that does NOT mean the web will only have to hold half of what we calculated. Velocity, radius, and gravitational force would remain the same reguardless of your weight unless you changed them too.
Any type of acrobatics that you would want to do would put even more stress on it. Also, if you where trying to get somewhere fast, the force would become even greater. If you're rope can hold you, everything depends on your arms. Your arms, when you remember that they're just pieces of meat, are extensions of the rope that connects to you're body. The biology of your arm is made to put most of the pressure onto the pivot points of your arm: The wrist and shoulder. Take into the fact that you'd already be in a lot of stress and concentration when you're swinging, and you'd be scared up there, so you would be wiggling all over the place, making the stress greater. You would already be struggling to keep hold, and it would tug at your pivot points every time you swing.
So, if you wanted to swing like Tarzan however, as in fast on a short rope to another rope that is already relatively close to you, this is completely possible! In fact, most teens could do it. Tarzan swinging is most likely what you were thinking of.
Hope this helped!