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-EquinoX-
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Homework Statement
I did an experiment on lab last week, and not really sure if this is right, but please help
me:
There are 3 forces being performed on a pulley framework. The forces are F1 = 50
which is 160 degrees of the x-axis and F2 = 100 which is 60 degrees of the x-axis.
F3 is just a mass hanging on the system with a direction of -y (270 degrees), and the mass is 125g.
I need to show that adding those three Forces will give me a value close to 0. Which means
the three are in equilibrium/balanced.
Homework Equations
The Attempt at a Solution
My attempt here is to find the forces on F1 first, which is:
F1 = 50 * (cos 160) i + 50 * sin (160) j = -46.98 i + 17.10 j
F2 = 100 * (cos 60) i + 100 * sin (60) j = 50 i + 86.60 j
F3 = .125kg * 9.8 m/s^2 = -1.225 j
F1 + F2 + F3 = 3.02 i + 102.475 j
Summing all those forces/vectors I should get a smaller value close to 0. However
what I got is different.
The 102.475 here is not right, the forces reacting on the y direction should be smaller
than 86.60.
Is my experiment a failure? Please help me...