Two ball bearings from different manufacturers are being considered for a certain application. bearing a has a catalog rating of 2.0 kn based on a catalog rating system of 3 000 hours at 602 mechanical engineering design 500 rev/min. bearing b has a catalog rating of 7.0 kn based on a catalog that rates at 10 6 cycles. for a given application, determine which bearing can carry the larger load

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?