types of forces

Nota:

• force exerted while touching each other.

1. tension

   Nota:

   • when a rope or cable carries a load
2. friction

   Nota:

   • force exerted from a surface over an object. 
3. compression

   Nota:

   • force exerted when squeezing something into a smaller space. 

Nota:

• force exerted over a distance. 

Nota:

• force that bodies exert on objects on their surface. 

1. newton's laws.

   Nota:

   • 1. the further objects from one another the weaker the force.  2. the larger the mass of an object the stronger its gravitational force. 

Nota:

• a force that two magnetic materials exert over each other over a distance. 

1. magnetic materials

   Nota:

   • cobalt, nickel and iron. technically also steel, because it contains iron. 
2. force of attraction

   Nota:

   • pullling force
3. force of repulsion

   Nota:

   • pushing force

Nota:

• a force that two electrically charged objects exert on each other. 

1. electrostatic potential energy

   Nota:

   • when you overcome the attraction or repulsion forces, you leave the object with electrostatic potential energy. 
   1. lightning

      Nota:

      • friction is caused by the moving water and air particles resulting in a change of charge at the bottom of the cloud. The cloud then push all like charges on the ground away, resulting in a discharge.