Question

Трактор тянет плуг с силой 36кН. Чему равна его мощность,если за 15 мин он проходит 1,8 км

Answer 1

N=A/t=Fs/t=36000Н х 1800м/900с=72кВт.

Answer 2

Calculation of Power

To calculate the power of a tractor, we can use the formula:

Power = Force x Distance / Time

Given that the force exerted by the tractor is 36 kN, the distance covered is 1.8 km, and the time taken is 15 minutes, we can calculate the power.

First, let's convert the time from minutes to hours:

Time = 15 minutes = 15/60 hours = 0.25 hours

Now, we can substitute the values into the formula:

Power = 36 kN x 1.8 km / 0.25 hours

To calculate the power, we need to convert the force from kilonewtons (kN) to newtons (N) and the distance from kilometers (km) to meters (m):

1 kN = 1000 N 1 km = 1000 m

Substituting the converted values:

Power = (36,000 N) x (1,800 m) / 0.25 hours

Simplifying the equation:

Power = 64,800,000 Nm/h

Therefore, the power of the tractor is 64,800,000 Nm/h.

Please note that this calculation assumes a constant force and speed throughout the entire 15-minute period. In reality, the force and speed may vary, so this is a simplified calculation.