¿Por qué las sillas tienen cuatro patas?

The video explores the multifaceted uses of chairs, emphasizing their typical four-legged design for stability. It delves into the trigonometric principles that explain why three-legged chairs are less stable and discusses the stability coefficients for chairs with varying numbers of legs. The video concludes with practical applications and a tip on stabilizing four-legged tables.

What is a common feature of most chairs despite their different types?

• They are all made of wood.

• They are all used for sleeping.

• They all have armrests.

• They all have four legs.

Why is a chair with three legs considered more unstable than one with four legs?

• Because it is more comfortable.

• Because it is heavier.

• Because its center of gravity is easier to displace.

• Because it is more expensive to produce.

What mathematical concept is used to explain the stability of three-legged chairs?

• Algebra

• Geometry

• Trigonometry

• Calculus

How does the stability of a chair change as the number of legs increases?

• Stability decreases with more legs.

• Stability increases exponentially with each additional leg.

• Stability remains the same regardless of the number of legs.

• Stability increases but with diminishing returns.

What is the main reason for not using chairs with more than four legs?

• They are not aesthetically pleasing.

• They are too heavy to move.

• The cost does not justify the slight increase in stability.

• They are less comfortable.

Why are five-legged chairs often used in offices?

• They are cheaper to produce.

• They offer better stability for frequent movement.

• They are more stylish.

• They take up less space.

What can be done to stabilize a four-legged table on uneven ground?

• Place a cushion under one leg.

• Shorten one of the legs.

• Rotate the table less than 90 degrees.

• Add more legs to the table.