Mechanical Advantage The measurement of how useful a machine is to the job.

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Presentation transcript:

Mechanical Advantage The measurement of how useful a machine is to the job.

Mechanical Advantage Defined as the ratio between the output force and input force.

When MA is great than 1: it multiplies the input force. Good for lifting heavy objects. When MA is less than 1: it multiplies distance. Good when traveling a distance.

Efficiency Measures how useful a machine is at working.

Simple Machines Basic machines used to make work easier for a job.

Simple Machines Lever Pulley Wheel and Axle Inclined Plane Wedge Screw

Compound Machine A machine made of two or more simple machines.

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