SIGMA PHYSICS TEACHER🗿 #shorts #physics

SIGMA PHYSICS TEACHER🗿 #shorts #physics
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[MarvinAzazi]

A great video like always :-) here´s the full explanation if someone wants to know:

The phenomenon where a ruler placed on the edge of a table tips over when you throw an apple on it, but doesn't tip over when there's a sheet of paper on it, can be explained by air resistance and pressure differences.

Explanation:
1. Ruler without paper:
When a ruler is positioned at the edge of the table and you throw an apple on it, the ruler tips over easily. This happens because the apple exerts a force on the ruler, pushing it over its tipping point. Without much opposing force or friction, the ruler has little to prevent it from falling.

2. Ruler with paper:
If you place a sheet of paper on top of the ruler and then throw the apple, something interesting happens: the ruler doesn't tip over as easily. This is because the paper has a much larger surface area than the ruler. As a result, when the apple hits, the air resistance created by the paper becomes significant.

- Air pressure and resistance: When you throw the apple onto the ruler with the paper, the paper tries to move downwards. As it does so, it pushes against the air underneath it. Since the air can't escape instantly, a momentary pressure difference is created below the paper, leading to a kind of cushioning effect that resists the ruler's movement.

3. Mass of the paper: Although the paper is very light, its large surface area increases the interaction with the air, enhancing this effect. The extra resistance generated by the air is often enough to prevent the ruler from tipping over due to the apple’s impact.

Summary:
The paper acts like a "brake" due to its larger surface area and the air resistance it creates. The air trapped underneath the paper can’t immediately escape, producing a counterforce that makes it harder for the ruler to tip over.