- #1
Swallow
- 21
- 0
Suppose we have a uniform disk and two forces are acting tangentially at the rim (both pointing in the same direction and parallel to each other and at diametrically opposite ends of the disk).
Since the disk does not rotate the sum of torques about an axis passing thorugh the center of the disk and perpendicular to it is zero, which means that the net torque about ANY axis should be zero.
But if we consider an axis which is sightly to the right or left of the center of the disk we see that the moment arms of the forces become unequal, and hence the torques are unbalanced...
What's hapening here, any ideas?
Since the disk does not rotate the sum of torques about an axis passing thorugh the center of the disk and perpendicular to it is zero, which means that the net torque about ANY axis should be zero.
But if we consider an axis which is sightly to the right or left of the center of the disk we see that the moment arms of the forces become unequal, and hence the torques are unbalanced...
What's hapening here, any ideas?