Physical Science Chpt 5

trnasfer of energy that occurs when a force makes an object move

formula for work=

the amount of work done in a certain amount of time

formula for power (watts)=

components of a watt=

device that makes doing work easier

force applied to the machine

force applied by the machine

the number of times a machine multiplies the effort force

measure of how much work put into a machine is changed into useful output work by the machine

machine machine that does work with only one movement

bar that is free to pivot, or turn, about a fixed point

grooved wheel with a rope, chain, or cable running along a groove

machine consisting of two wheels of different sizes that rotate together

sloping surface that rweduces the amount of force required to do work

inclined plae wrapped in a spiral around a cylinder

inclined plane with one or two sloping sides

when two or more simple machines work together