the six simple machines
this simple machine is a flat, sloped surface used to move heavy loads up to higher places.
If a machine has a mechanical advantage of 1, it only changes this characteristic of your input force, not its size.
What is direction?
A playground seesaw is a classic example of this specific class of lever.
what is a first-class lever
In physics, work is calculated by multiplying force times this variable.
What is distance?
This common household tool uses a wedge to cut metal lids and a wheel and axle to turn the gears.
What is a can opener?
A rigid bar that pivots or rotates around a fixed point called a fulcrum.
what is a lever?
This type of pulley system moves with the load and cuts the required lifting force in half, giving it an ideal MA of 2.
What is a movable pulley?
A doorknob, a steering wheel, and a pencil sharpener handle are all everyday examples of this simple machine.
What is a wheel and axle?
Simple machines do not change the total amount of work done; instead, they make work easier by trading a smaller force for a larger one of these.
What is distance
This compound machine uses two first-class levers working together, with the blades acting as wedges to cut paper.
What is a pair of scissors?
This machine features a grooved wheel and a rope, used to change the direction or size of a lifting force.
what is a pulley?
To calculate the Ideal Mechanical Advantage (IMA) of a lever, you divide the length of this arm by the length of the load arm.
What is the effort arm?
Because it places the load in the very middle (between the wheel pivot and the handles), a wheelbarrow belongs to this lever class.
What is a second-class lever
This sneaky force opposes motion between two rubbing surfaces and always drops a real machine's efficiency below $100\%$
What is friction?
A heavy-duty construction crane relies heavily on this simple machine system to multiply force and lift massive steel beams.
what is a pulley system (or block and tackle)?
Two inclined planes placed back-to-back, often used for splitting, cutting, or holding things in place.
what is a wedge?
Making an inclined plane longer while keeping the height the same will cause the mechanical advantage to do this.
What is increase?
A jar lid, a lightbulb base, and a spiral staircase are all variations of this simple machine.
What is a screw?
When friction transforms useful mechanical energy into non-useful energy, it is usually lost in this specific form.
What is heat (or thermal energy)?
This tool used for pulling out nails combines a lever (the handle) and a wedge (the claw that grips the nail).
What is a claw hammer?
An inclined plane wrapped around a central cylinder or shaft.
what is a screw?
You apply a force of 20N to a steering wheel, which turns the axle with a force of 100N This is the mechanical advantage of the wheel and axle.
what is 5
Tweezers, baseball bats, and human forearms are examples of this lever class, where the effort is applied in the middle.
What is a third-class lever?
This term describes the ratio of useful work output to total work input, expressed as a percentage.
What is mechanical efficiency?
When you turn the handle on this heavy-duty lifting device used by mechanics, a screw mechanism converts rotational motion into a massive upward lifting force.
What is a car jack (or screw jack)?