Question

Кран поднимает тело массой 2Т на высоту 3 м. какой он производит работу?​

Answer 1

Ответ:

Дано:

m=2 т.

h=3м

g=10Н/кг

Найти: А- ?

Решение:

A=F*s*cosa,

F=Fт=mg=2000кг*10Н/кг=20000 Н

A=F*h=mgh=20000 Н * 3м=60000 Дж=60кДж.

Ответ: 60кДж

Объяснение:

Answer 2

Calculation of Work Done by a Crane

To calculate the work done by a crane, we need to use the formula:

Work = Force x Distance

In this case, the force is equal to the weight of the body being lifted, and the distance is the height to which the body is lifted.

Given: - Mass of the body = 2 tons (2000 kg) - Height = 3 m

To calculate the force, we need to convert the mass from tons to kilograms:

Force = Mass x Acceleration due to gravity

The acceleration due to gravity is approximately 9.8 m/s^2.

Let's calculate the force:

Force = 2000 kg x 9.8 m/s^2

Now, let's calculate the work done:

Work = Force x Distance

Work = (2000 kg x 9.8 m/s^2) x 3 m

Calculating the above expression gives us the work done by the crane.

Please note that the sources provided do not contain specific information related to the calculation of work done by a crane. However, the calculation is based on fundamental principles of physics and does not require external sources for verification.