A rectangular area is divided into two constant strain trian

A rectangular area is divided into two constant strain triangular (CST) elements as shown in the figure. Nodes 1, 2 and 4 are fixed. A horizontal force of 1000 N is applied at node 3. The dimensions of the element are shown with the units of meters. Assume plane stress condition. Let E = 20 Times 10^6Pa, v = 0. Determine The displacements at node 3. The stresses in the element connecting nodes 1, 2 and 3.

Solution

A 30-mm bore series 02 angular-contact ball bearing carries a 700-lb radial load and a 1200-lb thrust load. The inner ring rotates at 1500 rpm. Determine the rating life in hours.(Note 1 lbf=4.45N) (answer: 250 hrs) I am using the Shigley S Mechanical Engineering Design 9th edition textbook and need a detailed explanation.