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Physics mind map
Simple machines are devices designed to make work easier by magnifying or changing the direction of a force. There are several types of simple machines, each with unique characteristics and applications.
Åpne
: 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
