Revolution on the Move: The Mechanics of the Wheel and Axle

The video tutorial explains the mechanics of wheels and axles, highlighting their role in reducing friction and facilitating movement. It introduces the concept of a pulley system, which uses wheels and axles to amplify force, making it easier to lift heavy objects. The tutorial also discusses the historical use of pulleys and their application in modern times.

What is the primary function of an axle in a wheel system?

• To change the direction of movement

• To reduce friction

• To attach the wheel to the vehicle

• To provide power to the wheel

How do wheels help in reducing friction when moving heavy objects?

• By increasing the force required to move the object

• By making the object heavier

• By providing a smooth surface for movement

• By increasing the weight of the object

What is a Dolly used for?

• To increase the weight of an object

• To lift objects vertically

• To move objects horizontally with ease

• To rotate objects in place

In a pulley system, what role does the groove in the wheel play?

• It increases the speed of rotation

• It reduces the weight of the wheel

• It keeps the rope in position

• It holds the axle in place

Why is it easier to lift heavy objects using a pulley system?

• Because it uses multiple ropes

• Because it changes the direction of the force

• Because it amplifies the force applied

• Because it reduces the weight of the object