A basketball player pushes down with a force of 34 N on a basketball that is inflated

to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball!

and the floor?

2.2 cm

Explanation:

Pressure = force / area

P = F / A

A = F / P

A = 34 N / (9*10⁴ Pa)

A = 0.000378 m²

Area of a circle is:

A = πr²

0.000378 m² = πr²

r = 0.011 m

Diameter is double the radius:

d = 2r

d = 0.022 m

d = 2.2 cm