Levers
This is a first class lever. A first class lever has the fulcrum located between the effort and resistance force.
IMA = distance of effort/ distance of resistance
AMA = resistance force/effort force
efficiency = AMA/IMA * 100
IMA = distance of effort/ distance of resistance
AMA = resistance force/effort force
efficiency = AMA/IMA * 100
This is the second class lever. In the second class lever the effort force is on the outside tip while the resistance force is located in the middle. The end of it is also located on the fulcrum instead of the middle of it being located on the fulcrum like a first class lever. An example of a second class lever is a wheel barrow
The third class lever is constructed the same as a second class lever but the effort force is located in the middle while the resistance force is located on the outside. An example of a third class lever is the human arm.
Wheel and axle
This is the wheel and axle. The wheel and axle is just a lever on the wheel with the end of the effort on the outside and the resistance located around a 360 degree axle.
Pulleys
Fixed Pulley
A fixed pulley is used to change the direction of the resistance force. It has a mechanical advantage of 1
Complex Pulley
You can increase your mechanical advantage by combining pulleys. A complex pulley is just 2 or more pulleys combined. So if you had two pulleys that both had a mechanical advantage of 2 then the complex pulley would have a mechanical advantage of 4.
Movable pulley
A movable pulley lifts heavy objects. It's mechanical advantage depends on how many strings are connected to the pulley. So if you had two sstrings then it would have a mechanical advantage of 2 and if it had 4 strings it would have a mechanical advantage of 4.
Inclined plane
An inclined plane is just a ramp that is inclined from the ground (hence the name). As the distance of the ramp increases the force required decreases.
IMA= distance of efort/distance of ramp
AMA= force of resistance/force of efort
EFF= AMA/IMA multiblyd by 100%
IMA= distance of efort/distance of ramp
AMA= force of resistance/force of efort
EFF= AMA/IMA multiblyd by 100%
Sprocket
Sprockets are gears connected by a chain. To find the mechanical advantage you take the amount of teeth on the output gear and divide it by the amount of teeth on the input gear.
Gears
Simple gears
Gears are rotating wheels with teeth that rotate one another to get a mechanical advantage. If the amount of teeth, torque or angular velocity of the input gear is the same as the output gear it's mechanical advantage is 1. The mechanical advantage can be found easily by taking the amount of teeth on the output gear and dividing it by the amount of teeth on the input gear. So, for example, if you had an input gear of 15 teeth and an output gear of 30 teeth. then it's mechanical advantage is 30/15 which equals 2.
Compound gears
Compound gears are two or more gear systems connected to each other by an axle. To find it's mechanical advantage you take the mechanical advantage of the first gear system and multiply it by the mechanical advantage of the second one and boom. That's your mechanical advantage.