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Statics and Basic Mechanics

What you forgot from basic physics

CMPE 118 MECHATRONICSCMPE 118 MECHATRONICS

Forces: In The General

Vector Quantities

Magnitude and Direction

Balanced Forces = No Acceleration

Statics

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External Forces: Normal

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External Forces: Moments

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Forces: CompressionAspect Ratio Matters

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Forces: TensionAspect Ratio Doesn’t Matter

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Forces: Bending

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Carrying Forces (loads)Tension

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Carrying Forces (loads)Smooth Surfaces

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Carrying Forces (loads)Rough Surfaces

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Carrying Forces (loads)Roller Supports

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Carrying Forces (loads)Sliding Joints

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Carrying Forces (loads)Pin Connection

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Carrying Forces (loads)Fixed Support

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The Basis of Statics

F=Ma=0

F=Ma=0 M=Ma=0

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An Example: A Pulley

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Examining an Object/Building/Robot:

1) How is the weight of the thing supported?

2) How does it change if it is under motion?

3) Other interesting aspects of the device?

Draw a free body diagram of part 1