Simple Machines and Their Functions

The video tutorial introduces simple machines, focusing on pulleys, inclined planes, wheels, levers, and screws. It explains how these machines make work easier by reducing effort. The tutorial provides examples of each machine in everyday life, such as using a pulley to draw water from a well, a slide as an inclined plane, and a screw jack to lift a car. The video also covers different types of levers and their components, including the fulcrum, effort, and load.

What is the primary function of a pulley in simple machines?

• To measure weight

• To lift heavy objects easily

• To cut materials

• To generate electricity

Which of the following is an example of an inclined plane?

• A wheel

• A slide

• A pulley

• A lever

How do wheels help in transportation?

• By reducing friction

• By increasing weight

• By generating power

• By cutting through surfaces

What is the fixed point of a lever called?

• Pivot

• Load

• Effort

• Fulcrum

In a lever, what is the term used for the force applied by a person?

• Resistance

• Fulcrum

• Effort

• Load

Which type of lever has the fulcrum in the center?

• First-class lever

• Second-class lever

• Third-class lever

• Fourth-class lever

What is a common use of screws in everyday life?

• To hang objects on walls

• To generate electricity

• To measure weight

• To cut materials

How does a screw jack function as a simple machine?

• By cutting through materials

• By generating electricity

• By lifting heavy objects

• By measuring weight

What feature of a screw prevents it from coming out easily?

• Its weight

• Its length

• Its grooves

• Its color

Which simple machine is used to lift a car in a garage?

• Lever

• Pulley

• Inclined plane

• Screw