Chapter 4 Test Flashcards
The weight of an object being moved
load
An object that makes work easier
machine
The force that pulls objects toward the earth
gravity
The force applied to cause a simple machine to do work
effort
The force that resists the movement of objects against each other
friction
A change in position
motion
A greater mass requires ________ force to move it
a greater
A force moving an object over a distance
work
The amount of work you do depends on how much _________ you use to move an object
energy
A black and tackle allows you to use _________ force when lifting an object because the rope moves a greater distance.
less
A wedge is made of one or more of these used to force materials apart
inclined planes
A pulley is a __________ with a groove that can hold a rope.
wheel
A lever is _________ that turns on a point
a bar
The inclined plane on a screw
the thread
A _________ is a push or a pull
force
