I like 15lbs so the ball is rock hard and doinces like crazy, and might explode.
Spalding, I guess. It may just depend on how much air is in it.
60
alot
7 to 9lbs.
Yes, it does with out air pressure the basketball will not bounce high as it's supposed to. It might also not bounce at all.
15 lbs
enough to make it bounce
1.5 Kilos is the heaviest a basketball can weigh, if aired up to its highest possible air pressure. But at recommended air pressure a basketball will weigh about 800 grams.
It would have too much bounce.
I know from experience that the best air pressure for bouncing a basketball is as full as you can get it.
Air.
air pressure is what give the ball its weight and its bounce