Read the article in the link below:
Types of friction and applications
Answer the following questions:
1- ​List ​the 4 types of friction in ascending order of what their ability to provide friction ( most
amount of friction to the least amount)
2 Given to the right is the image we see often during the cleaning
process of any building. ​Explain​ why is it important?
3. ​Explain​ what will happen if there was no friction between
the hands of a climber and the mountain rocks as shown in
the picture.
4. ​Identify​ the type of friction shown in the two images given below.
5- Identify ​if the direction of the friction shown in the image below is correct or not.
See this video on contact and non contact forces- ​Link
6- Cluster the following forces as contact and non contact forces.
Gravitational force, Magnetic force, Electrostatic force, friction, air resistance, Buoyant force,
tension, elastic force.
Contact Forces
Non contact forces