Question

9. Трактор при пахоте, имея силу тяги 6 кН, дви¬жется со скоростью 1,5 м/с. Какова мощность трактора? А. 4 Вт. Б. 9 Вт. В. 0,25 Вт. Г. 9000 Вт. Д. 4000 Вт.

Answer 1

P=F*v

P=6000*1.5=9000 Вт.

Ответ: Г).

Answer 2

Решение:

N=A/t=FS/t=Fv

N=6000*1,5=9000Вт (Г)

Answer 3

Calculating the Power of the Tractor

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

Power (P) = Force (F) × Velocity (v)

Given: - Force (F) = 6 kN - Velocity (v) = 1.5 m/s

Using the given values, we can calculate the power of the tractor.

Calculation

Power (P) = Force (F) × Velocity (v) P = 6 kN × 1.5 m/s

To calculate the power, we need to convert the force from kilonewtons (kN) to newtons (N) as the unit of velocity is in meters per second (m/s).

1 kN = 1000 N

So, 6 kN = 6000 N

Now, we can calculate the power:

P = 6000 N × 1.5 m/s

P = 9000 W

Therefore, the power of the tractor is 9000 W (Watts), which corresponds to option Г. 9000 Вт.

This calculation is based on the provided force and velocity, and the result is in accordance with the physics formula for power.