Question

При помощи подъемного крана подняли груз массой 2500 кг на высоту 12м. Какая радота при этом совершается

Answer 1

A=FS
F=gm
A=gm*S
A=10*2500*12=300000Дж

Answer 2

Calculation of Work Done

To calculate the work done when lifting a load using a crane, we can use the formula:

Work = Force x Distance

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

Given: - Mass of the load: 2500 kg - Height: 12 m

To calculate the force, we can use the formula:

Force = Mass x Acceleration due to gravity

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

Let's calculate the force first:

Force = 2500 kg x 9.8 m/s^2

Using this force, we can now calculate the work done:

Work = Force x Distance

Work = (2500 kg x 9.8 m/s^2) x 12 m

Now, let's calculate the work:

Work = 294,000 Joules

Therefore, the work done when lifting a load with a mass of 2500 kg to a height of 12 m using a crane is 294,000 Joules.