The earth is round, just go in the opposite direction.
The bridge is shorter than the pigs, and not all pigs stand on the bridge. ...
According to the theory of relativity, the faster the speed, the lighter the weight, so the pig must reach a certain speed to cross, that is, the pressure exerted by the pig on the ground is mg/2 (g = 9.8).
mg/2 = mv**2/r
v = (gr/2)**0.5 = 0.707 1
First cosmic speed = 7.9 km/s
If the pig runs fast enough, that is, the speed exceeds 7.9 km/s, it can cross the bridge safely. ...
There are two concepts of crossing the bridge. The longitudinal direction of crossing the bridge is crossing the bridge, and the horizontal direction can also be called crossing the bridge. Crossing a bridge horizontally, such as a boat passing under it, can be said to be a bridge. Usually we say Tiananmen, not through the Tiananmen Gate, but from the side. It's like crossing a bridge. This pig only needs to walk from one end, regardless of its load-bearing capacity.
Hope to adopt!