Question

Коля собирается совершить работу, равную 600 Дж, и помочь собственной бабушке втащить по лестнице авоську с капустой массой 5 кг. Какую силу придется приложить ему и на какую высоту он поднимет авоську с капустой? Нужно проверить, верно ли я решила!

Answer 1

Работа есть Сила на перемещение
Сила в нашем случае F = mg
A = mg * l
l = A / (mg)
l = 600 / 50 = 12
Ответ: 12 м.

Answer 2

Calculation of Force and Work

To calculate the force and work involved in lifting the bag of cabbage, we can use the formula:

Work = Force x Distance

Given: - Work = 600 J (joules) - Mass of the bag of cabbage = 5 kg - Acceleration due to gravity = 9.8 m/s^2 (approximately)

We need to find the force applied and the height the bag of cabbage is lifted.

Calculating the Force

The force required to lift an object can be calculated using Newton's second law of motion:

Force = Mass x Acceleration

In this case, the mass is the mass of the bag of cabbage (5 kg) and the acceleration is the acceleration due to gravity (9.8 m/s^2).

Therefore, the force required to lift the bag of cabbage is:

Force = 5 kg x 9.8 m/s^2

Let's calculate the force:

Force = 5 kg x 9.8 m/s^2 = 49 N

So, the force required to lift the bag of cabbage is 49 Newtons.

Calculating the Height

To calculate the height the bag of cabbage is lifted, we can rearrange the formula for work:

Work = Force x Distance

Rearranging the formula, we get:

Distance = Work / Force

Substituting the given values, we have:

Distance = 600 J / 49 N

Let's calculate the height:

Distance = 600 J / 49 N ≈ 12.24 meters

Therefore, the height the bag of cabbage is lifted is approximately 12.24 meters.

Please note that the calculations provided are based on the given information and assumptions.