Simple
Machine

a simple machine made of a grooved wheel and rope or cable wrapped around it

there are three types of pulley : fixed pulley ( MA = 1 ), moving pulley ( MA = 2), and compound pulley (must be counted first

its mechanical advantage is got by dividing its weight with force

examples of pulley: flagpole, blinds, elevators

a rigid bar that rotates around a fixed point called a fulcrum

there are 1st class lever, 2nd class lever, and 3rd class lever

examples of lever: seesaw, tweezers, crowbars

Formula of lever : (W x wa = F x fa) and (W:F = fa:wa)

a simple machine consisting of a wheel that turns around a post called an axel

makes us easier to move things from one place to another

examples: bicycles, cars, doorknobs, pencil sharpener

an inclined plane wrapped around a cone/cylinder to form a spiral

used to hold objects together

examples :of screw: screws, nuts, bolts, light bulbs

is a flat surface that is raised at one end

makes it easier to move things to a higher location

examples: ramps and slides

formula of inclined plane : (F x ℓ = W x h)

two inclined planes placed back to back

used to separate, cut, or split objects apart

examples: axes, knives, and chisels