Question

Какую силу нужно приложить чтобы удержать под водой сосновый брусок массой 800 кг

Answer 1

Обычнуюповолвтуиу к мьа а

Answer 2

Calculating the Force Required to Hold a Pine Log Underwater

To calculate the force required to hold a pine log underwater, we can use the formula:

F = ρ * g * V

Where: - F = force - ρ = density of water - g = acceleration due to gravity - V = volume of the pine log

Density of Water

The density of water is approximately 1000 kg/m^3.

Acceleration Due to Gravity

The acceleration due to gravity is approximately 9.81 m/s^2.

Volume of the Pine Log

To find the volume of the pine log, we can use the formula for the volume of a rectangular prism:

V = l * w * h

Where: - l = length of the pine log - w = width of the pine log - h = height of the pine log

Given that the mass of the pine log is 800 kg, we can use the density of pine wood (approximately 500 kg/m^3) to calculate the volume of the log:

V = m / ρ

Substituting the given values: V = 800 kg / 500 kg/m^3

Calculation

Let's calculate the volume of the pine log and then use it to find the force required to hold it underwater.