- #1
cmkc109
- 103
- 0
Homework Statement
How does the force get cancel out?
Homework Equations
The Attempt at a Solution
Please see the picture.
I don't understand why is F1 not included in the system ?
F1 just looks the same as F4, but F4 is included in the calculation.
Someone told me the horizontal vector and vertical vector somehow cancel out each other but i don't quite get it..