Yunding hotel

(1) Ding Long gravity:

g = mg = 9.9× 10 3kg× 10N/kg = 9.9× 10 4N，

Ding Long pressure on the pedestal:

F=G=9.9× 10 4 N，

Ding Long's pressure on the pedestal

(1) Ding Long gravity:

g = mg = 9.9× 10 3kg× 10N/kg = 9.9× 10 4N，

Ding Long pressure on the pedestal:

F=G=9.9× 10 4 N，

Ding Long's pressure on the pedestal is: p = f s = 9.9×1.04n0.9m2 =1.1×1.05pa;

(3)h=2m，

∴ The work done by the crane is:

w = Gh = 9.9× 104n×2m = 1.98× 105j。

Therefore, the answer is:1.1×105; 1.98× 10 5 .