Question

when do we say that work is done for class 9th chapter work and energy

Answer 1

work is said to be done when force produces motion........
I think it is sufficient for 9th class and this question is only asked in 1 mark.

Answer 2

Hey mate ❤

Here's ur answer-

In ordinary language the word work means almost any physical or mental activity.

But the concept of work is different in Physics.

For a work done , these two conditions must be followed-
1. The force must be applied for a work done.
2. The object on which force applied, must cover some distance.

Hope it helps ✔