System of Forces

  1. Coplaner Forces: The forces, whose lines of action action lie on the same plane are known as Coplaner forces.

  2. Concurrent Forces: The forces ,which meet at one point, are known as concurrent forces.

  3. Coplaner Concurrent forces: The forces, which meet  at one point and their lines of action lie on same plane, are called coplaner concurrent forces.

  4. Coplaner non-concurrent forces: The forces, which do not meet at one point but their lines action lie on same plane, are known as coplaner non-concurrent forces.

  5. Non-Coplaner Concurrent forces: the forces, which meet at one point but their lines of action do not lie on same plane are known as non-coplaner concurrent forces.

  6. Non-Coplaner Non-Concurrent forces: The forces, which do not meet at one point and their lines of action do not lie on same plane are called as non-coplaner non-concurrent forc