Find the rim tension and the bending stress in the rim of a flywheel, the section ofwhich is rectangular, 30 cm wide and 15 cm thick and mean diameter 240 cm. it runs at 300 rp. m. and has 6 arms. assume that owing to stretch ofthe arms the bending stress in the rim segment is 2/3 rd of the value obtained on the assumption that the rim segments are straight built in beams. p=7800kg/m^3

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?