Recent content by Santiago Tinelli

Moment of a force (torque) measures the tendency of a force F to make a rigid body rotate about a fixed axis directed along a point. I have to find an appropriate pivote point in the system to delete unknown forces. MO = rFsinθ = Fd The moment (torque) Mb of the force T about B is 0 since this...

That certainly would be useful for the length of each side. However, how can i use the geometry to determine forces?

Yes, I was referring to torque. Would it apply to the spring force? I´m sure I need to calculate the spring constant first. If I choose B as pivote then tension on the left side would be eliminated and I would have to work with the weight and the y component of the spring force. Which would be...

Rotational motion is restricted and therefore ∑Mo = 0 in any point in the system.

Which formulas would you use to calculate AB and BC knowing just α angle?

Are you thinking about using Hooke's Law on the right side? I was thinking about calculating the spring constant in lab and find a way to determine its force in terms of k, however I can´t think of a way to "connect" the angle α in both sides of the system.

I would use statics equation in x and y but the tension on the the left side is an unknown force and the spring force also. How should I relate the angle α with the tension on the left and the spring force? The picture contains a free body diagram I did.

<Moderator's note: Moved from another forum and thus no template.> I have a project from my Mechanics class which consist on building the system on the picture. It has a spring, cable and a protractor. I have to do an approximation of the mass and weight of the object that is put in the...