Physics mind map

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: a device that makes work easier by magnifying or changing the direction of a force

Simple Machine

W = weight

F = Force

wa = weight arm

fa = force arm

h = height

ℓ = length

Wedge

examples: axes, knives, and chisels

used to separate, cut, or split objects apart

two inclined planes placed back to back

Inclined planes

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

examples: ramps and slides

makes it easier to move things to a higher location

is a flat surface that is raised at one end

Screw

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

used to hold objects together

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

Wheel and axle

examples: bicycles, cars, doorknobs, pencil sharpener

makes us easier to move things from one place to another

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

Lever

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

examples of lever: seesaw, tweezers, crowbars

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

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

Subtopic

Pulley

examples of pulley: flagpole, blinds, elevators

its mechanical advantage is got by dividing its weight with force

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

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