Wheel and Axle

What is an axle?

• the circle attached to the wheel

• the rod which the wheel rotates

• the top of the wheel

• another word for fulcrum

When discussing simple machines, what is input effort?

• a type of simple machine

• the force you apply to move an object

• what the simple machine is lifing

• the point where the lever pivots

A circular object that revolves with or around an axle

• Wheel
• Axle
• Force
• Work

What is a real life example of a wheel and axle

• a tv remote

• a bicycle

• a shoe

• a phone

What is an axle?

• The tire that fits around a wheel

• The rod around which wheels rotate

• a type of inclined plane

• the rope that is strung through a pulley

Why don´t we just remove the wheel and turn the axle?

• turning the axle directly requires too much effort

• without the wheel, the axle is useless

• the wheel balances out the weight of the axle

• an axle cannot turn on its own

Which answer correctly describes wheel and axle movement?

• the wheel and axle move the same distance and turn with the same amount of force

• the wheel moves a lesser distance than the axle but turns with greater force

• the wheel moves a greater distance than the axle but turns with less force

• the wheel moves, while the axle stays completely still

In a doorknob, what part functions as the wheel?

• the knob itself

• the metal rod in the middle

• the fulcrum

• the keyhole

If input force is applied to the AXLE, you need ________ force.

• more

• less

• same amount of

If you turn the wheel and not the axle...

• you use less force but turn the wheel a greater amount

• you use more force but turn the wheel less

• there is no difference in turning the wheel or axle