Question

Человека массой 68 кг вытаскивают из ямы с помощью лошади со скоростью 4 км/ч.Определите мощность лошади.

Answer 1

M=68 кг
v=4 км- ч 4*1000\3600= м- с
n=?
решение
n= a\ t=f*v=mgV
(n)=кг*Н*м
=(кг с кг сокращается )получается Н*м\с=вт кг *с
подставляйте числа и в нуля

Answer 2

Calculating Horse Power

To calculate the power of the horse required to pull a person with a mass of 68 kg out of a pit at a speed of 4 km/h, we can use the formula:

Power (P) = Force (F) × Velocity (v)

First, we need to calculate the force required to pull the person out of the pit. The force can be calculated using the formula:

Force (F) = Mass (m) × Acceleration (a)

Given: - Mass (m) = 68 kg - Velocity (v) = 4 km/h

We need to convert the velocity from km/h to m/s: 4 km/h = (4 × 1000) m/3600 s = (4000/3600) m/s = (10/9) m/s

Now, we can calculate the force: Force (F) = Mass (m) × Acceleration (a) = 68 kg × (10/9) m/s = 680/9 N

Now, we can calculate the power using the force and velocity: Power (P) = Force (F) × Velocity (v) = (680/9) N × (10/9) m/s = 680/81 W

Therefore, the power of the horse required to pull a person with a mass of 68 kg out of a pit at a speed of 4 km/h is 680/81 watts.