# Strength of Materials problem

1. Apr 30, 2006

### thspoq2

Im including a scan of the problem and my work, please let me know if I did this right. Sorry about the sloppy handwriting.

Last edited: Apr 30, 2006
2. Apr 30, 2006

### Cyrus

3. Apr 30, 2006

### thspoq2

Fixed, thanks

4. Apr 30, 2006

### thspoq2

Nobody? Am atleast on the right track? I wish there was a way to check these sort of problems.

5. May 1, 2006

### FredGarvin

You might check your torque calculation. Using the numbers you are using, the equation should be (torque will be in ft-Lbf): $$P = \frac{T \omega}{5252}$$

I would do a quick and dirty compare using a rule of thumb based on distortion energy

$$T = \frac{\pi d^3}{16}(.58 S_y)$$

I think you've got the right idea though.

Last edited: May 1, 2006