Suppose that you balance a 5 kg ball on the tip of your finger that has an area of 1 cm2. What is the pressure

on your finger?

2000m

To calculate the pressure on your finger, you need to divide the force exerted by the ball (weight) by the area of contact between the ball and your finger. In this case, the weight of the ball is equal to its mass multiplied by the acceleration due to gravity.

Step 1: Calculate the weight of the ball.
Weight = mass x acceleration due to gravity
Given that the mass of the ball is 5 kg and the acceleration due to gravity is approximately 9.8 m/s^2, the weight of the ball is:
Weight = 5 kg x 9.8 m/s^2 = 49 N

Step 2: Calculate the pressure on your finger.
Pressure = Force / Area
Since the contact area is given in square centimeters, we need to convert it to square meters:
Area = 1 cm^2 = (1/10000) m^2 = 0.0001 m^2

Now, divide the weight by the area to calculate the pressure:
Pressure = 49 N / 0.0001 m^2 = 490,000 N/m^2

Therefore, the pressure on your finger is 490,000 N/m^2 (or Pascal).