Question

4) Describe the concept of angular kinematics. A) How are the forces of torque involved? Explain how the location of muscle insertion points increase or decrease torque. B) Describe the difference between angular and linear kinematics. If someone performs a kicking action, does the foot experience a greater angular displacement than the calf? What about linear displacement?

Answer 1

In angular kinematics the variables involved are related to the rotation of the body, the linear displacement is replaced with the amount of rotation and the linear velocity is replaced with the rate of rotation.

A. The torque is defined as the product of force and the distance at which the force is applied from the axis about which the body rotates. Hence as the distance of the muscle insertion increases the torque produced will also increase.

B. The difference between the linear and angular kinematics is the variables which are involved such as displacement in linear vs rotation in angular kinematics..etc. Yes while kicking the amount of angular displacement of foot is more as compared to calf, and similarly the amount of linear displacement is more for foot than calf.