Q. Work done is said to be zero, when (Solved)
1. some force acts on a body, but displacement is zero
2. no force acts on a body but some displacement takes place
3. either (a) or (b)
4. none of the above
- c. either (a) or (b)
1. some force acts on a body, but displacement is zero
2. no force acts on a body but some displacement takes place
3. either (a) or (b)
4. none of the above