Question

Тело лежит на столе. Масса тела 500 грамм. Площадь соприкосновения 0.07м в квадрате. Найти давление на стол.

Answer 1

Ответ:

P=500/7≈71,429 Па

Объяснение:

m=500 г=0.5 кг

S=0.07 м^2

g=10 м/с^2

____________/

P=F/S=mg/S

P=0.5×10/0.07=500/7≈71,429 Па

Answer 2

Calculation of Pressure

To calculate the pressure exerted by an object on a surface, we can use the formula:

Pressure = Force / Area

In this case, the force is equal to the weight of the object, and the area is the contact area between the object and the surface.

Given: - Mass of the object = 500 grams = 0.5 kilograms - Contact area = 0.07 square meters

To find the pressure exerted by the object on the table, we need to calculate the force first.

Calculation of Force

The force can be calculated using the formula:

Force = Mass * Acceleration due to gravity

The acceleration due to gravity is approximately 9.8 m/s^2.

Given: - Mass of the object = 0.5 kilograms - Acceleration due to gravity = 9.8 m/s^2

Let's calculate the force:

Force = 0.5 kg * 9.8 m/s^2

Using a calculator, we find that the force is equal to 4.9 Newtons.

Calculation of Pressure

Now that we have the force and the contact area, we can calculate the pressure using the formula:

Pressure = Force / Area

Given: - Force = 4.9 Newtons - Contact area = 0.07 square meters

Let's calculate the pressure:

Pressure = 4.9 N / 0.07 m^2

Using a calculator, we find that the pressure is approximately 70 N/m^2.

Therefore, the pressure exerted by the object on the table is approximately 70 Newtons per square meter.

Please note that the sources provided do not contain relevant information for this specific calculation. The calculation is based on the fundamental principles of physics.