Question

Девочку весом 300 Н везут на санках, площадь полозьев которых 0,05 м2. Вес самих санок 20 Н. Какое давление они оказывают на снег? СРОЧНО!

Answer 1

Решение :

F = 300 + 20 = 320 H

S = 0,05 м²

P = F/S = 320 : 0,05 = 6400 Па = 64 КПа

Answer 2

Calculating Pressure Exerted by the Sleds

To calculate the pressure exerted by the sleds on the snow, we can use the formula:

Pressure (P) = Force (F) / Area (A)

Where: - Force (F) is the total force exerted by the sled and the girl. - Area (A) is the total area in contact with the snow.

Given: - The girl's weight = 300 N - Area of the sled runners = 0.05 m² - Weight of the sleds = 20 N

First, let's calculate the total force exerted by the sled and the girl.

The total force (F) can be calculated as the sum of the girl's weight and the weight of the sleds:

Total Force (F) = Girl's Weight + Weight of the Sleds

Total Force (F) = 300 N + 20 N Total Force (F) = 320 N

Now, we can calculate the pressure exerted by the sleds on the snow using the formula:

Pressure (P) = Total Force (F) / Area (A)

Pressure (P) = 320 N / 0.05 m² Pressure (P) = 6400 Pa

So, the sleds exert a pressure of 6400 Pascals on the snow.