Question

When you stand up on your feet, your feet cover an area of about 0.2 m^2. Your feet push on the ground with a pressure of 50 lbs for each foot. What is your weight? (Hint: Weight is force)

a) 100 lbs
b) 50 lbs
c) 200 lbs
d) 25 lbs

Answer 1

The total weight of the person is 100 lbs, as each foot exerts a pressure of 50 lbs and the person stands on both feet.

Step-by-step explanation:

The question relates to the concept of pressure and how it is calculated based on the force exerted over a certain area. Pressure is defined as force per unit area. In the scenario provided, each foot exerts a pressure of 50 lbs on the ground and each foot covers an area of 0.2 m². Since the person has two feet, we would double the pressure for one foot to get the total weight. Thus, if one foot exerts 50 lbs, two feet would exert 100 lbs. Therefore, the correct answer is (a) 100 lbs.