89: Gravitational Mass
Title text: She's so fat the attraction goes up as the CUBE of the distance instead of the square
| This explanation may be incomplete or incorrect: This comic is so Einstein – Yo' momma is just a funny additional joke here. See "Principle of relativity" by Einstein. Furthermore some language issues have to be solved.|
If you can address this issue, please edit the page! Thanks.
A well known joke format goes: "Yo' momma's so fat, when she X, she Y." For example: "Yo' momma's so fat, when she sits around the house, she sits around the house! Variations play with the format, for example: "Yo' momma's so fat, she fell in the grand Canyon and got stuck!" A "Yo Mama" joke also appears in comic 681: Gravity Wells to the right of Jupiter.
Black Hat launches into a long description about the relativity of gravity and inertia that presumably will eventually lead to a Yo' Momma joke along the lines of "she's fat and not that attractive", but then gets bored or loses momentum and cuts to the chase.
The title text is a play on the law of gravitational attraction, which diminishes as the square of the distance. So if the distance between two objects doubles, the attraction is reduced to a quarter. And if the distance is halved, the attraction quadruples. Black Hat is saying that the attraction goes up as the cube, so if the distance is halved, the attraction increases eight-fold. This implies that "your momma is so fat, she can warp space-time". However, everyone, no matter how thin, can warp space time; contrary to Black Hat's explanation, the reason that objects have equal gravitational and inertial mass is that anything with mass causes a warping of space time that causes all other objects (as well as things without any rest mass, such as photons) to experience the same gravitational acceleration.
- Black Hat: Gravitational mass is identical to inertial mass. That is, the amount of inertia something has and the amount of gravity it has are effectively the same. What's interesting is that there doesn't seem to be any reason this should be true. One could imagine an extremely large object with lots of resistance to force and no gravity (or vice versa), but this is never observed.
- Black Hat: You know what? I'm just gonna skip the rest of the buildup and say it: Yo mama's fat.