Question

Exercise 9.4
High pressure, Low pressure
.
Read each of the situations described below. For each:
state whether it is desirable to have high pressure or low pressure
explain why this is desirable.
Use the words force, area and
pressure
in
1 A hotel has a lounge with a wooden dance floor. A notice says that people must
not wear stiletto heels.
your answers.

Answer 1

Explanation:

⌨️⌨️⌨️Search on goo

Answer 2

Low pressure is desirable on the wooden dance floor.

• Pressure is defined as the thrust acting per unit area.

• Pressure = $\frac{Thrust}{Area}$

• Its SI unit is Pascal (Pa) or N/m²

• Stiletto heels are high heels with less area in contact with the floor.

• Since Pressure is inversely proportional to the area in contact, a person wearing stiletto heels will exert more pressure on the wooden floor than a person wearing flat slippers.
• According to the notice, people should not wear stiletto heels implying that the floor cannot withstand high pressure.