Q$2$:

The $500-kg$ load on the hydraulic lift shown in the nextQ$3$:

Two oil tanks are connected to each other through a

manometer. If the difference between the mercury levels in

the two arms is $32$ in $,$ determine the pressure difference

between the two tanks in psia. The densities of oil and

mercury are $45lb\frac{m}{f}{t}^3$ and $848lb\frac{m}{f}{t}^3,$ respectively.

Figure is to be raised by pouring oil $(=780k\frac{g}{m^3})$ into a

thin tube. Determine how high h should be in order to

begin to raise the weight.