Lever Leverage
This is the fixed point around which a lever rotates or pivots.
fulcrum
This simple machine is just a flat, sloped surface used to lift heavy loads with less effort.
inclined plane or ramp
This simple machine consists of a grooved wheel with a rope or cable wrapped around it.
pulley
Mechanical advantage is the number of times a machine multiplies this.
input force
In science, work is calculated by multiplying force times this.
distance
In a first-class lever, like a seesaw, this component sits directly in the middle between the effort and the load.
fulcrum
A knife blade and an axe head are examples of this simple machine, which is essentially two inclined planes placed back-to-back.
wedge
A doorknob and a steering wheel are classic examples of this two-part simple machine.
wheel and axle
If a machine has a mechanical advantage exactly equal to 1, it isn't multiplying your force, but it is changing this.
direction
This is the standard scientific unit used to measure both work and energy.
Joule
Wheelbarrows and bottle openers are everyday examples of this specific class of lever, where the load is in the middle.
second-class lever
This simple machine is an inclined plane wrapped around a central cylinder.
screw
This specific type of pulley stays attached to a single spot and only changes the direction of your pulling force, providing a mechanical advantage of 1.
fixed pulley
This abbreviation stands for the mechanical advantage a machine would have if there were absolutely no friction.
Mechanical Advantage
No machine can ever be 100% efficient because some input energy is always converted into heat by this force.
friction
When you use a hockey stick or tweezers, your effort is in the middle, making it this class of lever.
third-class lever
While a ramp reduces the force needed to lift an object, it increases this trade-off factor.
distance
This type of pulley moves along with the load and cuts the effort force required in half.
movable pulley
You exert a force of 10 Newtons on a machine, and it lifts a 50-Newton box. This is the machine's actual mechanical advantage.
5
This term describes a machine that is made up of two or more simple machines working together, like a bicycle or a pair of scissors.
compound machine
Third-class levers never increase the output force, but they are incredibly useful for increasing this instead.
distance or speed
On a screw, the distance between two adjacent threads is known by this term.
pitch
This is the specific name given to a system of multiple fixed and movable pulleys working together.
block and tackle
f a ramp is 12 meters long and 3 meters high, this is its ideal mechanical advantage.
4 ($12 / 3$)
This percentage represents the ratio of work output to work input.
efficiency