Introduction to Simple Machines: Levers

The video tutorial introduces simple machines, focusing on levers. It explains the components of a lever, including the bar and fulcrum, and how levers help reduce the effort needed to perform tasks. The tutorial highlights that while levers do not decrease the total work, they make tasks easier by reducing the force required. Examples of levers in daily life, such as fishing poles, shovels, and utensils, are provided to illustrate their widespread use.

Which of the following is NOT considered a simple machine?

• Inclined plane

• Lever

• Motor

• Screw

What are the two main components of a lever?

• Bar and fulcrum

• Rod and axle

• Bar and wheel

• Screw and wedge

How do levers help in performing tasks?

• They increase the force required

• They reduce the total work needed

• They eliminate the need for a fulcrum

• They decrease the effort needed

Which of the following is an example of a lever?

• Pulley

• Fishing pole

• Inclined plane

• Screw

What common tool is an example of a lever?

• Shovel

• Wrench

• Hammer

• Saw