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
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
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
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 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%.
I would like to explain the Kt factor better than I did in class.
The figure 4.40b axis d/b represents how close we are to the
hole. So d/b=0 means we are at the hole, not that the hole has a