"The Power of Arch" Shape and Structure PPT Courseware 3

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"The Power of Arch" Shape and Structure PPT Courseware 3

A brief review of the content of the first two lessons:

1. What is the bending resistance of the beam related to?

(The bending resistance of the beam is related to the width and thickness of the beam)

(The bending resistance of the beam is related to the material and length of the beam)

2. After doing two experiments, we found:

As the width of the paper increases, its resistance to bending (also increases),

The thickness of the paper increases and its ability to resist bending (greatly increases).

3. Bending thin materials into various shapes reduces the width of the material but increases the thickness of the material. Increasing the thickness can greatly enhance the bending resistance of the material.

Observe and think:

1. Fix the arch feet and determine how much weight the paper arch can bear.

2. How does the shape of the paper arch change as the bearing capacity increases?

The secret of arch load-bearing:

When the arch carries weight, it can transmit the pressure downward and outward to the adjacent parts. The various parts of the arch squeeze each other and combine more closely.

Pressure on the arch will produce an outward pushing force. Against this force, the arch can carry a large amount of weight.

Reasons why the watermelon rind cannot be carried on the shoulder:

Because the watermelon skin arch transmits the force downward and outward to the adjacent parts, the various parts of the arch are squeezed against each other and combined more closely. Therefore, the watermelon peel arch cannot be carried on the shoulder.

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For more information about the "Shape and Structure Power of Arches" PPT courseware, please click the Shape and Structure ppt Power of Arch ppt tag.

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Update Time: 2024-11-22

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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