logging in or signing up Simple Machines abohall Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 299 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: December 15, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Simple Machines : Simple Machines SOL 3.2 Machine – a tool that helps us do work : Machine – a tool that helps us do work Machines help us by: Changing the amount of force on an object. Changing the direction of the force. Force is a push or pull that changes the motion or shape of an object. : Force is a push or pull that changes the motion or shape of an object. Example: I push a bookshelf to move it. Energy is the ability to do work. : Energy is the ability to do work. Example: I must have energy to run the mile. Work is the result of force moving an object. : Work is the result of force moving an object. Example – Picking up something heavy is hard work! Gravity : Gravity Gravity is the force that constantly pulls objects toward Earth. Simple machines – have few or no moving parts : Simple machines – have few or no moving parts LIPSW2 Lever Inclined Plane Pulley Screw Wedge Wheel and Axel Lever –made of a board or bar set on top of a fulcrum. It is used to lift weight : Lever –made of a board or bar set on top of a fulcrum. It is used to lift weight Example: seesaw, crowbar, baseball bat, rake Inclined Plane – a slanted surface to make lifting easier : Inclined Plane – a slanted surface to make lifting easier Example: ramp, stairs Pulley – made of rope and string wound around a reel to change the direction of a force. : Pulley – made of rope and string wound around a reel to change the direction of a force. Example : flagpole, clothesline, cranes, fishing reel Screw – an inclined plane wrapped around a pole that is used to hold materials together or drill holes. : Screw – an inclined plane wrapped around a pole that is used to hold materials together or drill holes. Example: drill bit, screws Wedge – two inclined planes together used to raise an object or split an object. : Wedge – two inclined planes together used to raise an object or split an object. Example: knife, door wedge, ax Wheel and Axel – a wheel that turns on a post to help move things quickly and easily : Wheel and Axel – a wheel that turns on a post to help move things quickly and easily Example: steering wheel, doorknob, screwdriver Compound Machine – two or more simple machines working together. : Compound Machine – two or more simple machines working together. Examples: Bike Car How Work is Done : How Work is Done Energy Force Function Work is done! You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Simple Machines abohall Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 299 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: December 15, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Simple Machines : Simple Machines SOL 3.2 Machine – a tool that helps us do work : Machine – a tool that helps us do work Machines help us by: Changing the amount of force on an object. Changing the direction of the force. Force is a push or pull that changes the motion or shape of an object. : Force is a push or pull that changes the motion or shape of an object. Example: I push a bookshelf to move it. Energy is the ability to do work. : Energy is the ability to do work. Example: I must have energy to run the mile. Work is the result of force moving an object. : Work is the result of force moving an object. Example – Picking up something heavy is hard work! Gravity : Gravity Gravity is the force that constantly pulls objects toward Earth. Simple machines – have few or no moving parts : Simple machines – have few or no moving parts LIPSW2 Lever Inclined Plane Pulley Screw Wedge Wheel and Axel Lever –made of a board or bar set on top of a fulcrum. It is used to lift weight : Lever –made of a board or bar set on top of a fulcrum. It is used to lift weight Example: seesaw, crowbar, baseball bat, rake Inclined Plane – a slanted surface to make lifting easier : Inclined Plane – a slanted surface to make lifting easier Example: ramp, stairs Pulley – made of rope and string wound around a reel to change the direction of a force. : Pulley – made of rope and string wound around a reel to change the direction of a force. Example : flagpole, clothesline, cranes, fishing reel Screw – an inclined plane wrapped around a pole that is used to hold materials together or drill holes. : Screw – an inclined plane wrapped around a pole that is used to hold materials together or drill holes. Example: drill bit, screws Wedge – two inclined planes together used to raise an object or split an object. : Wedge – two inclined planes together used to raise an object or split an object. Example: knife, door wedge, ax Wheel and Axel – a wheel that turns on a post to help move things quickly and easily : Wheel and Axel – a wheel that turns on a post to help move things quickly and easily Example: steering wheel, doorknob, screwdriver Compound Machine – two or more simple machines working together. : Compound Machine – two or more simple machines working together. Examples: Bike Car How Work is Done : How Work is Done Energy Force Function Work is done!