Wheel and axle The wheel and axle is a variation of a lever it is basically a lever shaped in a circle. The fulcrum is in the middle of the wheel and it rotates around. The Wheel helps extend the force of a lever but in 360 degrees. The wheel also is important for reducing friction on an object. For example in a car there would be a lot more friction if it did not have wheels. The wheel and axle is also part of a pulley.
Pulley A pulley is a rope with a heavy object tied to it being pulled around a wheel and axle and it is part of the lever family. The pulley is very efficient with almost no friction and it help bring a smaller load over a longer distance not much unlike an inclined plane. There can also be two or more pulleys on one rope which would use less force over an even longer distance
The wheel and axle is a variation of a lever it is basically a lever shaped in a circle. The fulcrum is in the middle of the wheel and it rotates around. The Wheel helps extend the force of a lever but in 360 degrees. The wheel also is important for reducing friction on an object. For example in a car there would be a lot more friction if it did not have wheels. The wheel and axle is also part of a pulley.
Pulley
A pulley is a rope with a heavy object tied to it being pulled around a wheel and axle and it is part of the lever family. The pulley is very efficient with almost no friction and it help bring a smaller load over a longer distance not much unlike an inclined plane. There can also be two or more pulleys on one rope which would use less force over an even longer distance