✔ 最佳答案
Lets' assume that the distances are from end A.
Taking clockwise moments about A we have:
(4 x 12) + (6 x 24) + (2 x 30) + (8 x 36) + (10 x 48)
i.e. 48 + 144 + 60 + 288 + 480 => 1020
T₂ has an anticlockwise moment of T₂ x 60
so, 1020 = 60T₂
=> T₂ = 17 Newtons
Now, T₁ + T₂ = 30
Hence, T₁ = 13 Newtons
:)>