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People sit on sofas than on stools because people are under pressure (unchanged), the force area (increases), and the pressure becomes (small).
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People are more comfortable sitting on a sofa than sitting on a stool. It is because people are under pressure (small), the force area (large), and the pressure becomes (small).
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(scattered over the entire buttocks and back) (evenly) (weak).
The sofa is softer than the stool, and sitting on the sofa, the force area of the body is relatively large, and the pressure is small, so it is more comfortable. >>>More
Answer: C
What is considered is the pressure, the pressure is constant, the force area is large, P=F s, s is large, and the pressure is small. >>>More
The sofa has a large contact area, so the pressure is small, so it is comfortable.
Gravitational potential energy elastic potential energy.
Generally speaking, adults weigh much more than children, and the difference in force area when sitting on a sofa is not particularly large. >>>More