The calculation of forces in biomechanics involves using Newton's second law, which states that force is equal to mass times acceleration. This means that you need to know the mass of an object or body part and the acceleration it experiences in order to calculate the force.
The units of measurement used in biomechanics calculations depend on the specific values being calculated. For example, forces are measured in newtons (N), masses in kilograms (kg), and accelerations in meters per second squared (m/s^2).
To calculate torque in biomechanics, you need to know the force applied to an object or body part, the distance from the point of rotation, and the angle between the force and the lever arm. The formula for torque is force x distance x sin(angle).
The formula for calculating work in biomechanics is force x distance. This means that you need to know the force applied and the distance over which the force was applied in order to calculate work.
The formula for calculating power in biomechanics is work divided by time. This means that you need to know the amount of work performed and the time it took to perform the work in order to calculate power.