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Chapter 13 Work And Machines By Alissa

Published on Nov 24, 2015

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PRESENTATION OUTLINE

Potential energy

The energy stored in an object or material

Gravitational potential energy

The gain in potential energy when an object is lifted up against gravity
Photo by 96dpi

Kinetic energy

The energy of a moving object
Photo by cknara

Work

Applying a force to an object to move it through a distance

Simple machine

A machine with few moving parts, making it easier to do work
Photo by swanksalot

Effort force

The force applied to a machine

Resistance force

The force that a machine acts against

Fulcrum

The pivot point of a lever
Photo by archangel 12

Mechanical advantage

The number of times a machine multiplies the force applied
Photo by lux venit

Pulley

A type of simple machine
Photo by funadium

Wheel and axle

A simple machine made of a handle

Inclined plane

Is a straight, slanted surface
Photo by slocumjoseph

Screw

A type of simple machine that multiplies effort

Wedge

May have one or two slanted surface

Compound machine

A combination of two or more machines
Photo by hugh llewelyn

Efficiency

A ratio of the work done by a machine compared with the work put into the machine