The mass of a person is 60 kg, the area of one ski is 0.15 m2. What pressure does he put on the snow at the start.
| March 26, 2021 | education
m = 60 kg.
g = 10 m / s2.
S1 = 0.15 m2.
P -?
Pressure P is called a scalar physical quantity equal to the ratio of the force F to the area S on which this force acts: P = F / S.
A person acts on the snow by the force of his weight, the value of which is expressed by the formula: F = m * g, where m is the mass of a person, g is the acceleration of gravity.
Since the skier is on two skis, and the area of contact of one with the snow is S1, then S = 2 * S1.
The formula for determining the pressure of a person on snow will take the form: P = m * g / 2 * S1.
P = 60 kg * 10 m / s2 / 2 * 0.15 m2 = 2000 Pa.
Answer: the pressure of a person on the snow is P = 2000 Pa.
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