Wheels
Rollers reduce the amount of ______________ produced, when moving a load.
What is friction.
I am the part of the lever that tilts.
What is the fulcrum?
What simple machine is in a pulley?
What is a wheel and axle?
What is a gear?
What is a wheel with teeth.
Wheels have an __________ that helps it to move.
What is an axle.
Rollers make it harder to move loads, because you ...
What is that you have to keep bringing them to the front.
What are the 3 parts of a lever
What is the fulcrum, load, effort.
As we increase the amount of pulleys in a system the amount of force need ___________.
What is decreases.
The name for the wheel that transfers force.
What is drive wheel?
When brakes are applied to wheels they create this force which slows them down.
What is friction?
What were rollers originally used for?
What is the pyramids.
As you move the load closer to the fulcrum we will use ________ effort?
What is less.
What are the 3 main types of pulleys?
What is fixed , moveable and block and tackle?
When we have a wheel to wheel drive system with an elastic around one wheel, the wheels turn in the _________ direction.
What is opposite.
Wheels are better than a roller because...
What is that you don't need to keep moving the wheel forward. It continuously rolls.
This simple roller is used at home for pizza or cookies.
What is a rolling pins?
A see saw is this class of lever.
What is class 1?
This type of pulley can used to see the Amazon Rainforest.
What is a zip line?
This gear systems helps you not be late.
What is a clock?
The larger the _____________ of a wheel the less effort you need to use.
What is circumference?
This type of roller system is most commonly used in treadmills or in factories.
What is a conveyor belt?
A fishing rod is this class of lever.
What is third class?
True or false, do fixed pulleys reduce the force required to lift the load.
What is false.
When we have a smaller driver wheel, the driven wheel turns _______ and we need _________ force to turn the system.
What is slower, and less.