A piston 11.96 cm in diameter and 14 cm long works in a cylinder of 12 cm in diameter. If the lubricating oil which fills the space between them has a viscosity of 0.65 poise, calculate the speed with...

A piston 11.96 cm in diameter and 14 cm long works in a cylinder of 12 cm in diameter. If the lubricating oil which fills the space between them has a viscosity of 0.65 poise, calculate the speed with which the piston will move through the cylinder when the axial load of0.86 N is applied.

A cylinder of radius 0.2 m and length 1.3 m rotates concentrically inside a fixed cylindrical sleeve of radius 0.21 m. Find the viscosity of oil that fills the space between them if a torque of 1.2 N-m is required to maintain a rotation of 80 rpm.