Calculate the average pressure exerted on the palm of a shot-putter’s hand by the shot if the area of contact is 50.0 cm2 and he exerts a force of 800 N on it. Express the pressure in N/m2 and compare it with the 1.00×106 Pa pressures sometimes encountered in the skeletal system.

Solution 21PE

Pressure is defined as the force per unit area. Mathematically, pressure, area and force are related as .

Step 1 of 2</p>

Area of contact cm2

m2

Force exerted N

We are required to calculate the pressure.

Pressure = Force/ Area

Pressure = 800 N/(50.0 X 10-4) m2

Pressure =16.0 X 104 N/m2

Pressure = 1.6 X 105 N/m2

Therefore, the pressure is 1.6 X 105 N/m2.