The power of a crane is 25000 watt. What work will be done by it in 4 seconds?

100000J

Explanation:

Given parameters:

Power of the crane  = 25000W

Time taken  = 4s

Unknown:

Work done by the crane  = ?

Solution:

Power is the rate at which work is being done. It is expressed as:

      Power  =  

  Work done  = Power x Time taken

Now insert the parameters and solve;

  Work done  = 25000 x 4  = 100000J

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.