Finding Frictional resistance

A hydraulic lift of the type commonly used for greasing automobiles consists of a 10,000 in diameter ram that slides in a 10,006 in diameter cylinder (as shown in the attachment), the annular space being filled with oil having a kinematic viscosity of 0.0038 ft^2/sec and specific gravity of 0.83. If the rate of travel of the ram v is 0.5 fps, find the frictional resistance, F when 6 ft of ram is engaged in the cylinder.

Pressure Measurement

Refer to attachment:Need to rotate the one figure in the acrobat program window or print out to see it better. 1.)Picture of closed container holding water and oil. Air at 34kPA below atmospheric pressure is above the oil. Calculate pressure at the bottom of the container in kPA(gage) 2.)Picture of washing machine. The pump pulls fluid from the tub and delivers it to the disposal sink. Calculate the pressure at the inlet to the pump when the water is static (no flow). The soapy water solution has a specific gravity of 1.15

Static Fluid Forces

See Attachment for picture: An observation port in a small submarine is located in a horizontal surface of the sub. The shape of the port is shown in attachment. Calculate the total force acting on the port when the pressure inside the sub is 100kPA(abs)and the sub is operating at a depth of 175m in sea water. Sub is .80m + .30m long by .60m wide if the print is not clear on attachment.

Static Fluids Forces

See attachment - Tank is 38" Tall. Winch cable is on a 30 degree angle to the outside angled wall and Gate is 10" in diameter if print in attachment is unclear. Problem states: A tank of water has a circular pipe connected to its bottom. A circular gate seals the pipe opening to prohibit flow. To drain the tank, a winch is used to pull the gate open. Calculate the amount of force that the winch cable must exert to open the gate.

Resultant Force

See attachment for clarity. The magnitude of the resultant force on the indicated area and the location of the center of pressure are being asked for in this problem.