What principle of design that applies the equal distribution of weight from a central point of area resulting to sense of equilibrium?

Which of these fabric is a man-made fabric?

Does Linen is an example of man-made fabric?

These are hair-like strands that are wound to make yarn or thread.

Arrange the following cutting tools from smallest to biggest.

Sleeping garment can only be worn at night.

What is the correct way of applying principle of balance on the following images?