Understanding Forces and Their Effects

Front

What is a force?

Back

A force may be described as a 'push' or a 'pull'.

Front

What are contact forces?

Back

Contact forces are forces that act on an object when it is touched.

Front

Name three types of contact forces.

Back

Friction Force, Normal Force, Spring Force.

Front

What are non-contact forces?

Back

Non-contact forces act on an object without touching it.

Front

Give examples of non-contact forces.

Back

Gravitational Force, Magnetic Force, Electrostatic Force.

Front

What instruments are used for measuring force?

Back

Spring balance.

Front

What is the formula for unidirectional resultant force?

Back

R = F1 + F2 + F3 + ... + Fn.

Front

How do you calculate the resultant of opposite forces?

Back

R = F1 - F2, where F1 is the greater force and F2 is the smaller force.

Front

What is the Pythagorean law used for in forces?

Back

It is used to calculate the resultant of perpendicular forces.

Front

What is the difference between mass and weight?

Back

Mass is the quantity of matter in a material, while weight is the measure of how gravity acts on that mass.