Even so, carrying his own weight is plausible. Now when spider-man jumps off a building and falls, he exerts a dynamic loading on the web, increasing his effective weight from say 60 kg by several times. That could support a static weight of about 720 kilograms (divide by gravity = 9.81 m/s/s). That means the web strand can hold a static force ( W) of: If the strand is a cylinder, of radius r and knowing PI (π) is 3.14, then we can calculate area ( A): Of course, he hangs off a web strand that is much thinner than 1 square metre – from the image it looks like the strand has a width of maybe 3 mm. The square metre refers to the cross-sectional area of the web. This means it can support 10 9 Newtons per square metre – 1 billion Newtons is the force required to hold a 100,000 tonne weight. Spider web has a tensile strength of about 1,000 Megapascals (MPa). Is this realistic (assuming his web is like a normal spider’s web, not some Marvel universe “super” web)? On screen, it looks like Spider-Man swings around on a pretty thin bundle of web. Most people have heard the common sayings about spider web being “stronger than steel”, even though that’s a myth. Photo: Columbia Pictures/Marvel Studios/Sony Pictures
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