Question

Подъемный кран равномерно поднимает груз массой 2 т на высоту 5 м найдите работу крана g=9,81 ньютн кг​

Answer 1

Объяснение:

A=потенциальной энергии

П=mgh

A=2000 кг*5 м*9.8Н/кг=98кДж

Answer 2

Calculation of Crane's Work

To calculate the work done by the crane in lifting a 2-ton load to a height of 5 meters, we can use the formula:

Work (W) = Force (F) × Distance (d)

First, we need to convert the mass of the load from tons to kilograms. 1 ton is equal to 1000 kilograms.

So, the mass of the load (m) = 2 tons = 2000 kg

The force (F) required to lift the load can be calculated using the formula:

Force (F) = mass (m) × acceleration due to gravity (g)

Given that the acceleration due to gravity (g) is 9.81 m/s^2.

Now, we can calculate the force:

F = 2000 kg × 9.81 m/s^2 = 19620 N

The distance (d) the load is lifted is 5 meters.

Now, we can calculate the work done by the crane:

Work (W) = Force (F) × Distance (d) = 19620 N × 5 m = 98100 J

So, the work done by the crane in lifting the 2-ton load to a height of 5 meters is 98100 joules.