How the Egyptians built the pyramids

The video explores theories on how the Egyptian pyramids were constructed, focusing on the use of pulleys. It explains how pulleys can reduce the force needed to lift heavy stones, providing a mechanical advantage. However, this advantage comes with the trade-off of needing to pull the rope over a longer distance. The video concludes that while the exact methods remain unknown, pulleys likely played a significant role in building these ancient wonders.

What is the mechanical advantage of using a pulley system as described in the text?

What role did lubricants play in the construction of the pyramids?