Force And Pressure Chapter 3 Flashcards
What are forces
Forces are a pull or push factor
What are the types of contact forces?
Friction
Air resistance
Normal force
Tension
What are the types of non-contact force?
Gravitational force
Electrostatic force
Magnetic force
What is mass?
Mass is a measure of the amount of matter in a body.
What is the SI unit for mass?
The SI unit for mass is KG
What Is weight?
Weight is the gravitational force acting on an object that has mass
What is the SI unit for weight?
The SI unit for weight is NEWTON (N)
What is gravitational field?
It is a region in which a mass experience a force due to gravitational attraction.
What is gravitational field strength?
It is defined as the gravitational force per unit mass placed at the point.
What is the formula for gravitational field strength?
It is g = w/m
State 4 difference between mass and weight.
Mass is the amount of matter while weight is the gravitational force
Mass is a scalar quantity while weight is a vector quantity
Mass is measured in KG while weight is measured in N
Mass is measured with a beam balance or a electronic balance while weight is measured with a spring balance
What is density?
Density is defined as mass per unit volume
The formula for density?
Density = mass /volume
What is pressure
It is the force acting per unit area.
The formula to find pressure
Pressure =force/area
