Posted by **Mary Pinzon** on Sunday, November 4, 2012 at 9:26pm.

Can some one help me with this question.

A uniform 119.0 cm long, 78.0 gram wooden rod is suspended from it midpoint. On one end of the rod, a mass of 350 g is attached, and on the other end a mass of 150 g is attached. A third mass of 225 g is attached at some distance x from the midpoint such that the rod does not rotate. Assume all of the masses hang perpendicular to the rod. Determine the distance x in cm.

I have tried torque 350g = T225 +T150 to solve but I am not getting the right answer.

Thank you for your help!

- Physic -
**drwls**, Monday, November 5, 2012 at 4:53am
I do dot see any mention of lever arms, the fact that the center is at 59.5 cm from the ends, nor the distance x is your equation. What is T supposed to mean? I am not surprised you are getting the wrong answer.

The mass of the rod will not matter since it is suspended at its center of mass.

350*59.5 = 150*59.5 + x*225

Solve for x, which is measured to the right of center.

g has been cancelled out

## Answer this Question

## Related Questions

- math - Uniform rod AB with end B resting against rough vertical wall. ...
- physics - A uniform rod is set up so that it can rotate about a perpendicular ...
- physics - A thin non-uniform rod of length L=2.00 m and mass M=9.00 kg is free ...
- physics - A uniform 1.3-kg rod that is 0.80 m long is suspended at rest from the...
- physics - A thin, uniform rod is hinged at its midpoint. To begin with, one-half...
- Physics - A thin, uniform rod is hinged at its midpoint. To begin with, one half...
- Physics - A nonuniform 2.0-kg rod is 2.0 m long. The rod is mounted to rotate ...
- physics - A uniform thin rod of length 0.55 m and mass 5.5 kg can rotate in a ...
- AP Physics - A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a ...
- Physics - A mass of 100g is attached to one end of a massless rod, 10cm in ...