FORCE & MOTION: SIMPLE MACHINES


6.8E investigate how inclined planes and pulleys can be used to change the amount of force to move an object.

Vocabulary



SIMPLE MACHINE- Device that makes work easier, often by reducing the amount of effort force needed to move an object.

SPRING SCALE - A tool that measures a pulling force by the tension on a spring; the force is measured in Newtons.


NEWTON - Unit of measurement for forces, measured using a spring scale.

LOAD - The object to be moved using a machine.

INCLINED PLANE - A ramp or slope that reduces the force needed to move objects up and down heights; a simple machine.


PULLEY - A device consisting of a wheel over which a rope or chain is pulled in order to lift heavy objects; a simple machine.


FORCE - A push or pull that can change the motion of an object, measured with a spring scale in Newton (N) units.


FIXED PULLEY - Attached to a structure and does not move; changes the direction of the effort force used to lift a load; a simple machine.


MOVEABLE PULLEY - A pulley attached to the object to be moved; reduces the force needed to move the object; a simple machine.

PULLEY SYSTEM - A combination of fixed and movable pulleys.

WEBSURFING SCIENCE: 6.8E:

Part One:

Part Two:
Part Three:
Part Four:

Simple Machines Project

Machines Web Quest
Inclined Planes Webquest
Pulleys Web Quest
Ed Heads Simple Machines

FossWeb Pulleys
How Simple Machines Work
Inclined Plane Gizmo


Interactive Inclined Planes

http://phet.colorado.edu/en/simulation/the-ramp


Interactive Pulleys

http://www.compassproject.net/sims/pulley.html