Help me... dik : La = 40cm Wa = 800 N Wb = 200 N

La x Wa = Lb x Wb
40 x 800 = Lb x 200
32000 = Lb x 200
Lb = 32000/200
Lb = 160

La' x Wa' = Lb' x Wb'
(40+10) x 800 = (160-10) x 200
50 x 800 = 150 x 200
40000 = 30000

jawabannya D

50 x 800 = 200 x 200
40000 = 40000