The air presses from the inside on every square centimeter of the shell of the inflated
| February 4, 2021 | education
The air presses from the inside on every square centimeter of the shell of the inflated ball with a force of 15 N. What is the air pressure in the ball?
By definition, pressure is a physical quantity equal to the force acting per unit of surface area perpendicular to it.
Consequently, the air pressure inside the ball is equal to the force acting on each fragment of its inner surface area, divided by the value of this very area
P = F / S
Numerically P = 15 N / 1 cm² = 15 N / cm² = 15 * 10000 N / m² = 150000 Pa = 150 kPa
Answer: The air pressure inside the ball is 150 kPa
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