A cylinder filled with oil is under pressure from a piston, as shown in the figure. The diameter d of the piston is 1.80 in. and the compressive force F is 3500 lb. The maximum allowable shear stress τallow in the wall of the cylinder is 5500 psi.
What is the minimum permissible thickness τmin of the cylinder wall? (See figure.)
![2129_6f1a51b8-2536-4029-8854-becd176d1c00.png](https://secure.tutorsglobe.com/CMSImages/2129_6f1a51b8-2536-4029-8854-becd176d1c00.png)