# Combined Stresses

## Problem 01 | Stress in Helical Spring

**Situation**

The helical spring shown is axially loaded with a compression force *P* equal to 5 kN. The mean diameter of the spring is 100 mm and the wire used is 10 mm as indicated in the figure.

- What is the shear stress at
*A*? - What is the shear stress at
*B*? - On diameter
*AB*, locate the point of zero stress measured from*C*.

## Problem 904 | Combined Axial and Bending

**Problem 904**

To avoid interference, a link in a machine is designed so that its cross-sectional area is reduced one half at section A-B as shown in Fig. P-904. If the thickness of the link is 50 mm, compute the maximum force P that can be applied if the maximum normal stress on section A-B is limited to 80 MPa.