This is a youth basketball size used for girls and boys ages 9 – 11. Size 4: 25.5″ 14 oz: 7.5 to 8.5: 5-8 year old boys and girls. Size 3: 22″ 10 oz: 7.5 to 8.5: Mini basketball for boys and girls ages 4-8 years old. Size 1: 16″ 8 oz: 7.5 to 8.5: Micro Mini basketball for boys and girls ages 2-4 years old.
Don’t bother if you didn’t see it on your ball—not every manufacturer prints it on their basketballs. NBA recommends that the air pressure in a basketball must be between 7.5 and 8.5psi. You can use this standard measurement as a guide to get the required air pressure for your basketball.
If the basketball bounces up to the chest it means it is over-inflated, an. Continue Reading. For a 29.5″ basketball (mens) and a 28.5″ basketball (womens), the recommended air pressure range is 7 - 9 PSI. The irony is almost no one has a gauge to accurately check the PSI rating on a basketball while inflating it because most pumps aren’t equipped with a gauge and ones that are rarely give an accurate reading.
Conventional wisdom is that a basketball needs 8 psi to be properly inflated. A car tire, just for a comparison, needs 40 psi. Most basketballs have inflation instructions printed right on them.
Maddie Meyer/Getty Images Sport/Getty Images. A regulation NBA basketball must contain between 7 1/2 and 8 1/2 pounds of pressure per square inch, or PSI. The ball also must exhibit an official NBA approval mark. At the beginning of an NBA game, each team must have access to six balls during the warm-up period.
An NBA basketball must be inflated to a pressure of 7.5 to 8.5 PSI. The WNBA uses the same pressure regulations. In the NCAA, inflation requirements are given in weight, with the men’s ball ...
This is the official size for women’s high school, college, and pro basketball. Size 5: 27.5" 17 oz: Boys and girls ages 9-11 years old. This is the standard youth basketball you find in most stores. Size 4: 25.5" 14 oz: Boys and girls ages 5-8 years old. Size 3: 22" 10 oz: Boys and girls ages 4-8 years old. Also known as "mini" basketball. Size 1: 16" 8 oz
Many balls are inflated to the average pressure of 8 pounds. Regulating a basketball's air pressure ensures fair playing conditions throughout a league. A ball's internal air pressure determines the height of its bounce. Using Newton's laws of motion as an explanation, the ball's internal pressure applies force to any surface it hits, causing an equal force to repel it in the opposite direction.