Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
MULTIPLE CHOICE TYPE
In an electric cell which in use, the change in energy is from:
How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction?
What is the SI unit of work?
Name the CGS unit of work.
How long should an electric motor, of power 2 H.P. operate, so as to pump 5 m3 of water from a depth of 15m. [Take g = 10 N kg−1]
A force can cause an object to change its ______.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Food grains are getting dried in the sun.
State whether work is done or not, by writing yes or no, in the following case:
A man pushes a wall.
