A 3 m X 4 m rectangular tank is filled with water up to a depth of 5 m. Compute the force on the base of the tank. A box with a base of 0.8 m X 0.6 m is being dragged on smooth oily floor. If the box...

A 3 m X 4 m rectangular tank is filled with water up to a depth of 5 m. Compute the force on the base of the tank.

A box with a base of 0.8 m X 0.6 m is being dragged on smooth oily floor. If the box is separated by a thin oil film of 0.25 mm, what is the force required to maintain a uniform speed of 2.75 m/s. The viscosity of the oil is 0.20 N-s/.