I WONDER - What Is A Wheel And Axel?

The video tutorial explains a machine consisting of a wheel and axle, highlighting how the wheel multiplies torque to facilitate movement or lifting. This principle is crucial in transportation, such as cars and bicycles, and is also present in everyday items like doorknobs and pencil sharpeners. The mechanical advantage is determined by the ratio of the wheel and axle radii.

What are the two main components of the machine described?

• A screw and a wedge

• A wheel and a lever

• A wheel and an axle

• A pulley and a gear

How does the wheel and axle system make it easier to move objects?

• By increasing the speed

• By reducing the weight

• By changing the direction of force

• By multiplying the rotational force

Which of the following is NOT an example of a wheel and axle system?

• Bicycle

• Doorknob

• Pencil sharpener

• Inclined plane

In which everyday item can you find a wheel and axle mechanism?

• Scissors

• Doorknob

• Hammer

• Ruler

What determines the mechanical advantage in a wheel and axle system?

• The ratio of the radii of the wheel and axle

• The material of the axle

• The speed of rotation

• The weight of the wheel