Solve Physics Problem with Crane Sling Tension Calculations

[real hero]

crane sling tension...

Here i am stucked with some problems in physics.could you please help me to solve the below problem

from the photo of the tower crane,if the crane is to lift a concrete slab with dimension of 250mm,3400mm,6000mm calculate the.



1.load in kN that thecrane is carrying

2.tension in each of the verticle cable

3.load acting on the tower of the crane

4.pressure acting on the foundation of the crane

5.moment of force(load moment)acting on the foundation of the crane

6.work done if the concrete is moved over a distance of 50 ft

7.energy that released when the concrete slab fall on to the ground,if the vertical cable failed when the load was at a height of 20 m

8.based on the photo of tower crane explain the advantages of the movable pulley above the load that is being lifted..

for the crane diomension you can use any crane diomension getting from internet...

 

[real hero]

[PLAIN][URL]http://i971.photobucket.com/albums/ae192/sajeeshsalim/0fcf3c1d.jpg[/PLAIN][/URL]