Question

A backhoe lifts 22,000 Newton 's of steel a distance of 15m In 44 second. How much power did the crane require to lift the girder. ​

Answer 1

7500 W

Step-by-step explanation:

First of all, we need to find the work done by lifting the steel. This is given by

`W=Fd`

where:

F = 22,000 N is the force applied

d = 15 m is the displacement of the steel

Solving the equation,

`W=(22,000 N)(15 m)=3.3\cdot 10^5 J`

Now we can find the power of the crane, which is given by

`P=(W)/(t)`

where

W is the work done

t = 44 s is the time elapsed

Substituting into the formula,

`P=(3.3\cdot 10^5 J)/(44 s)=7500 W`