Force–Angle Calculator

Force–Angle Resolution

Calculate Rotary vs. Stabilizing Muscle Forces

1. Total Muscle Force (Newtons):

2. Angle of Pull: 30°

Angle between muscle tendon & bone.

Rotary Force

50 N

(Causing Movement)

Stabilizing Force

87 N

(Compression)

Total Force Rotary ($F_y$) Stabilizing ($F_x$)

🎓 Biomechanics Lesson:

• Rotary Component ($F \sin \theta$): This force actually rotates the bone. It is highest at 90°.
• Stabilizing Component ($F \cos \theta$): This force pulls the bone into the joint socket (Compression). If the angle is >90°, it becomes a Dislocating Force.