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Equivalent system for a shaft driven by a belt

The are Z forces as components of the radial forces, but they balance: total Z force = 0. Consider what would happen if the axle snapped. The pulley would move in the Y direction. Why should it move ...
Rich's user avatar
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How does a church built from stones survive 70 years under water?

As Pere mentioned stone structures can last a long time underwater. There are many buildings around the world that appear during drought conditions. Here are some pictures of the Temple of Quichula, a ...
Rich's user avatar
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How does a church built from stones survive 70 years under water?

The first part of the answer should be that basically neither stone nor mortar are soluble in water, so stone, mortar or concrete structures can last for quite long in water even if they weren't ...
Pere's user avatar
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How does a church built from stones survive 70 years under water?

See the rubble around it? that's other buildings that were less robustly put together that fell apart. And you can see the first floor of another tower that did collapse. Older building techniques don'...
ratchet freak's user avatar

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