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Make a list of what you know about Simple Machines?

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Presentation on theme: "Make a list of what you know about Simple Machines?"— Presentation transcript:

1 Make a list of what you know about Simple Machines?
Activator Make a list of what you know about Simple Machines?

2 Simple Machines and Work
SPS8. Students will determine relationships among force, mass, and motion. e. Calculate amounts of work and mechanical advantage using simple machines.

3 Simple Machines An unpowered mechanical device that reduces the amount of effort we have to put into the machine to move something. Make work easier by Redirecting a force Multiplying a force Both redirecting and multiplying a force

4 Simple Machines Examples Pulley Lever Inclined plane Wheel and axle
Wedge Screw Screw

5 Mechanical Advantage The amount a machine multiplies our effort put into a machine. Formula MA = Fr = de Fe dr MA = Forceresistance Forceeffort MA = distanceeffort distanceresistance

6 Mechanical Advantage

7 Effort the force you apply to the simple machine or the distance you apply the force on the simple machine

8 Effort

9 Resistance the weight the machine moves for you or the distance the machine moves an object for you

10 Resistance

11 Work A force is applied to an object and the object moves in the direction of the force. W = F x d

12 Work Which of the following is work?
You pick up a 10 N book and lift it 1 m. You hold the book and walk with it for a distance of 10 m.

13 Summary What does a simple machine do for you?


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