Question

2. Человек поднимает за 16 с из колодца глубиной 8 м ведро воды массой 10 кг. Какую мощность при этом он развивает?

Answer 1

N = $\frac{A}{t}$

A - работа 
t - время ( 16 с )

A = m * g * h 

m - масса ( 10 кг )
g - ускорение свободного падения ( 10 Н / кг )
h - высота ( глубина ) ( 8 м )

A = 10 * 10 * 8 = 800 Дж 

N = $\frac{800}{16}$ = 50 Вт 

Answer 2

Calculating Power Output

To calculate the power output, we can use the formula:

Power (P) = Work (W) / Time (t)

The work done in lifting the bucket of water can be calculated using the formula:

Work (W) = Force (F) × Distance (d)

Given: - Mass of the water (m) = 10 kg - Depth of the well (d) = 8 m - Time taken to lift the bucket (t) = 16 s - Acceleration due to gravity (g) = 9.8 m/s^2

First, let's calculate the force required to lift the bucket of water.

Force (F) = Mass (m) × Acceleration due to gravity (g) Force (F) = 10 kg × 9.8 m/s^2 F = 98 N Now, we can calculate the work done in lifting the bucket of water.

Work (W) = Force (F) × Distance (d) W = 98 N × 8 m W = 784 J

Now, we can calculate the power output.

Power (P) = Work (W) / Time (t) P = 784 J / 16 s P = 49 W

Therefore, the person is developing a power of 49 watts while lifting the bucket of water from the well.