問題詳情
51. The diagram shows a U-tube having cross-sectional area A and partially filled with oil of density . A solid cylinder, which fitsthe tube tightly but can slide without friction, is placed in the right arm. The system reaches equilibrium. The weight of thecylinder is:
(A) ALρg
(B) L3 ρg
(C) Aρ(L + h)g
(D) Aρ(L – h)g
(E) None of the above.