A set of springs having the same spring constant k are connected as
ed below. What is the equivalent spring constant, keq?
Determine the magnitude of the forces acting on the spheres and the container.
The container has two support
A bar having a diameter of 1 inch, a hardness of 400 Bhn, and a hot-rolled surface is
under reversed torsional loading at temperature of 1000F. Estimate the endurance
limit at the reliability level of 95%.
A screw jack with a 2-in. double-thread Acme screw is used to raise a load of 3,000 lb.
A plain thrust collar of 3.0 in. mean diameter is used. Coefficients of running friction are
estimated as 0.12 and 0.09 for f and fc, respectively. Determine
A conical compression coil spring, as illustrated below, is made of 3-mmdiameter steel wire (G=79 GPa) and has an active coil diameter that varies from
20 mm at the top to 45 mm at the bottom. The pitch (axial spacing between
1. A set of springs havmg the same spring constant k are connected as
lent spring constant km?
'-ji. Quiz #1
El Determine the magnitude of the forces acting on the spheres and the co
_.ii.o supports shown by the little triangles. Ass
ume the welg ht