Question

list 3 conditions to decide whether work is done or not

Answer 1

let's start

3 conditions
1) work needs force means without force work can't be done.. it is so essential
2) work done also needs at least some distance .. if distance will occur on an object then it shows that work is done and obviously if we give force on an object then it will cover some distance. . so it is clear that distance is also essential.
3) work done also needs a particular direction . it is the most important if the direction is not same then it is not possible for work done ..

this completes your answer
hope it is helpful. .

and follow me back .