Answer:
[tex]W=168000\ Joule[/tex]
Explanation:
Mechanical Work
A force is doing work if it produces a displacement in parallel to the direction of the force. The work can also be interpreted and the change in energy needed to produce the displacement. Expressed in formulas:
[tex]W=\vec F\cdot \vec d[/tex]
If the force is parallel to the distance, the formula reduces to its scalar equivalent
W=F.d
The crane lifts a load a distance of d = 210 m by applying a force of 800 N. we compute the work as
[tex]W=(800).(210)=168000\ Joule[/tex]
[tex]\boxed{W=168000\ Joule}[/tex]
