Rollers
Give an example of a roller
Rolling pin, Laminator, roller slide
Give an example of a lever
In a wheel and axle system, which part rotates?
The wheel.
Name one example of a pulley
Flagpole, blinds, crane
Which of the following is NOT a simple machine?
Lever, Gear, Roller, or Magnet
Magnet
What is a roller?
A roller is a cylindrical object that rotates around its axis
Define Lever
A rigid bar that rotates around a fixed point, used to lift or move heavy objects.
Give an example of a wheel and axle in everyday life.
Car wheels, door knobs, or a bicycle.
What is a pulley?
A simple machine consisting of a grooved wheel with a rope or belt around it.
What is a simple machine
Basic mechanical devices that make work easier.
How does a roller make it easier to move objects?
By reducing friction between the object and the surface it rolls on.
What point does a lever move on?
Fulcrum
Define Wheel and Axle
A circular object attached to a central rod, used for moving or carrying loads.
What is friction?
Friction is a force that happens when two things rub against each other. It makes it harder for things to slide or move smoothly.
T or F: Friction makes objects move smoothly without any resistance.
False
What makes rollers different than wheel and axles?
Rollers are cylindrical objects designed to reduce friction and smooth movement of objects along a surface, commonly found in conveyor systems. Wheels and axles are a simple machine where a wheel rotates around a fixed axle, often used to transmit force or motion, such as in vehicles or doorknobs.
How does a lever help lift heavy objects?
By using leverage, which multiplies the force applied.
Describe one way in which ancient civilizations used the wheel and axle.
Pottery making, transportation of goods, or irrigation systems.
What are some things we can do to reduce friction?
Apply grease or oil
T or F-Pulleys are used to push objects rather than pull them.