1. The problem statement, all variables and given/known data Consider the following arrangement Calculate the work done by tension on 2kg block during its motion on circular track from point A to point B. 2. Relevant equations 3. The attempt at a solution We know that work done by a force is product of force and displacement. We know the displacement of point of application as 4 m. How to find the work done by the tension as it is not constant it is variable.