Question 105
Calculating pressure
In this investigation, you will investigate how the pressure that a person exerts on the floor varies. Work in groups of two or three.
You will need: a person who is willing to be weighed, or who knows their body mass; a bathroom scale, if body mass is not known; sheets of squared paper; pencil.
Method
1. Measure or record the body mass of the person.
2. Convert the mass to weight using: weight in N = mass in kg × strength of gravity in N/kg. Take the strength of gravity as 10 N/kg.
3. Ask the person to place one foot on a piece of squared paper. They can do this while wearing shoes.
4. Use the pencil to draw around the foot of the person.
For your prediction in part 8b i about lying down compared to standing: Explain your answer.
In this investigation, you will investigate how the pressure that a person exerts on the floor varies. Work in groups of two or three.
You will need: a person who is willing to be weighed, or who knows their body mass; a bathroom scale, if body mass is not known; sheets of squared paper; pencil.
Method
1. Measure or record the body mass of the person.
2. Convert the mass to weight using: weight in N = mass in kg × strength of gravity in N/kg. Take the strength of gravity as 10 N/kg.
3. Ask the person to place one foot on a piece of squared paper. They can do this while wearing shoes.
4. Use the pencil to draw around the foot of the person.
For your prediction in part 8b i about lying down compared to standing: Explain your answer.
