F= 12(G object +G motion),

∵ The two drawings have the same structure and the same weight of moving pulley, GL > G2,

∴ Tension use:

f 1 > F2；

(2) Assuming that the heights of the lifting weights are the same,

∵G 1 > G2，

∴ The pulley block has done useful work:

W useful 1 > w useful 2,

√η= W useful w useful +W quantity,

1η = w useful +W useful = 1+W useful

Mechanical efficiency:

η 1>η2.

So the answer is: > >.