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Addition of forces (resultant force)
- Parallel forces
- Non-parallel forces
- Triangle method (start at different points)
- Parallelogram method ( start at the same points)
- Perpendicular forces (Phytagorean Theorem)
a) Stationary @ constant velocity
\(R=mg\, cos \,\alpha\\ Fg=mg\, sin\, \alpha\)
b) Acceleration
\(mg\,sin\,\alpha-Fg=ma\)
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