Advertisements
Advertisements
Question
What are the units of (a) work, and (b) energy?
Advertisements
Solution
The units of work and energy are the same.
(a) Work - Joule (J)
(b) Energy - Joule (J)
APPEARS IN
RELATED QUESTIONS
Write an expression for work done by a force depends?
What do you understand by 'potential energy' and 'Kinetic energy'? Give three examples of each to illustrate your answer.
One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.
Mention whether work is done or not in the following activity.
| S. No | Activity | Work done or not done |
| 1. | Pushing the door | |
| 2. | Holding a doll | |
| 3. | Sitting in a bus | |
| 4. | Pushing a wall | |
| 5. | Digging soil |
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A green plant is carrying out photosynthesis.
State whether work is done or not, by writing yes or no, in the following case:
A boy climbs up 20 stairs.
