Question

Спортсмен , масса которого 78 кг. стоит на лыжах.площадь которрого 0,312 м 2 какое давление оказывает спортсмен на снег?

Answer 1

Дано:
m = 78 кг
S = 0.312 м^2
P - ?

P = F/S = mg/S = 78*10/0.312 = 2500 Па = 2.5 кПа

Ответ: P =  2.5 кПа

Answer 2

Calculation of Pressure

To calculate the pressure exerted by the sportsman on the snow, we need to use the formula:

Pressure = Force / Area

In this case, the force exerted by the sportsman is equal to his weight, which can be calculated using the formula:

Weight = Mass x Acceleration due to gravity

Given that the mass of the sportsman is 78 kg, we can calculate his weight as follows:

Weight = 78 kg x 9.8 m/s^2 (acceleration due to gravity)

Calculating the weight:

Weight = 764.4 N

Now, we need to calculate the pressure by dividing the weight by the area of the skis. The area of the skis is given as 0.312 m^2.

Pressure = Weight / Area

Substituting the values:

Pressure = 764.4 N / 0.312 m^2

Calculating the pressure:

Pressure = 2451.43 Pa

Therefore, the sportsman exerts a pressure of approximately 2451.43 Pascal (Pa) on the snow.