Physics Of Chairs
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Sitting Pretty. The physics of chairs.
What is a force?
What are examples of forces?
How is a waiter able to hold up a tray?
What forces act on the tray?
What forces act on the tray?
What forces act on the bridge?
What forces act on the chair?
What forces act on the chair?
Good Chair Design • • • • • •
Not too soft, not too deep Back-seat angle 90 degrees Level seat surface Seat should not be lower in back than in front Function first, design second Result: Good posture!
What is a force?
What are examples of forces?
How is a waiter able to hold up a tray?
What forces act on the tray?
What forces act on the tray?
What forces act on the bridge?
What forces act on the chair?
What forces act on the chair?
Good Chair Design • • • • • •
Not too soft, not too deep Back-seat angle 90 degrees Level seat surface Seat should not be lower in back than in front Function first, design second Result: Good posture!
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