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Physics chapter 5 ex

in order for work to be done a force must make something move
two conditions for work to be done object must move the movement must be in the same direction as the applied force
when work is done what happens transfer of energy
when you do work on an object you increase its energy
when youlift an object up you... increase its potential energy
when you push an object you ... increase its kinetic energy
the amount of work donein one second power
device that makes doing work easier machine
machines make work easier 2 ways: increasing force and increasing distance over which the force is applied
no firiction ideal mechanical advantage
a measure of how much work a machine does that can be changed into useful output work efficency
a machine that does work with only one movement of the machien simple machine
6 types of simple machines leer pulley wheel and axle screw wedge inclined plane
a grooved wheel with a rope or chain running along the groove pulley
a system of pulleys block and tackle
consist of shaft or axle attached to larger wheel so the wheel and axle rotate together wheel and axle
a sloping surface such as a ramp tha reduces the amount of force required to do work inclined plane
an inclined plane wrapped in a spiral around a cylindrical post the screw
a inclined plane with one or two sloping sides it changes directions of input force wedge
two or more simple machines working together compound machine
imperdance of the motion of change through a conductor resistance
black black
bunnies brown
ride red
on orange
yellow yellow
gates green
because blue
vince violet
gets gray
winded white
Created by: brooketrout
Popular Physics sets




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