Station 4

Station 4 includes a mass and two spring scales. The spring scales are coming from separate angles and holding the mass. The net force has to equal zero because the mass has constant velocity, it isn't moving. The forces acting on the mass are the tension force of the first spring scale on the mass, the tension force of the second spring scale on the mass, and the gravitational force of the earth on the mass. The spring scale on one side read 3.8 N and the other read 3.7 N. The unknown vector was the gravitational vector. When the third vector is added to the other to quantities, taking into consideration not just magnitude, but also direction, the forces should add to be zero.

To see the free body diagram for this situation, go to: http://www.imaginationcubed.com/loader.php?aDrawingID=8992e1a1a7247c54eae0446dc7c7c2e7&from_email=caroline.hufford%40gmail.com&from_name=caroline

I tried the link and the drawing didn't turn out exactly the way that I had intentioned it to. The force on the upper right corner should read Ft, SS2 - M, and the bottom force should say Fg, E-M.