Depends on the pickup, one 'lift' (100 sheets)of the new 'standard light' 4x8 x 1/2, is about 3,700 pounds on a nice sunny day.
Drywall can hold quite a lot of weight if the proper anchors are used. However if hanging anything on a wall it's a better idea to find the studs and screw into them.
it can't hold very much weight
If there's any question about whether or not a drywall anchor will hold on the ceiling, the best thing to do would be to find a ceiling joist and use a long screw to go into solid wood. (Use a stud finder to locate the joist.) Hanging on a ceiling is more dangerous than hanging on a wall since things that fall can fall on people or pets. If you HAVE to hang just in drywall, use the strongest anchor you can get (i.e. one that expands like a butterfly after insertion, or the type that flares out like a flower when you tighten it). Your local hardware store can help with what's a reasonable weight limit.
About 4 grams.
1" drywall weighs approximately 3.4 pounds per square foot.
20 times its weight in liquid
112lbs
it can hold as much weight as it can handle
There is effectively no limit to the amount of weight that aluminum can hold, if you use enough aluminum.
There is no such thing as 'exterior' drywall.
A triangle is a shape. How much weight a triangularly shaped object could hold would depend on the nature of the object.
Straight, at 90 deg to the board.
it can hold up to 2 gallons