Levers

The video explains levers, a type of simple machine, and their components: the lever itself and the fulcrum or pivot. It describes how levers allow movement of a load with effort around the fulcrum, and how the fulcrum's position affects the effort needed. Examples include a spanner, where the nut is the load and the spanner head is the fulcrum, and a door, where the hinge is the fulcrum. The video highlights the importance of the fulcrum's position in minimizing effort.

What are the two main components of a lever?

• Lever and load

• Lever and fulcrum

• Fulcrum and effort

• Load and effort

How does the position of the fulcrum affect a lever's function?

• It has no effect on the lever's function

• It changes the color of the lever

• It determines the material of the lever

• It affects the distance the load moves and the effort required

In the example of a spanner, what acts as the fulcrum?

• The handle

• The nut

• The spanner head

• The load

Why are door handles placed far from the hinge?

• To make the door more secure

• To increase the weight of the door

• To reduce the effort needed to open the door

• To make the door look balanced

What role does the hinge play in a door as a lever?

• It acts as the load

• It acts as the effort

• It acts as the fulcrum

• It acts as the handle