Advertisements
Advertisements
प्रश्न
When do we say that work is done?
Advertisements
उत्तर
- When a force operates on an object and causes it to be displaced from its original location, it produces work.
- A force acts on the body.
- There is a displacement of the body caused by the applied force along the direction of the applied force.
संबंधित प्रश्न
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
State the conditions of equilibrium for a rigid body.
Is the motion of moon around the earth in circular path an accelerated motion?
Complete the following sentences:
Joule is the unit of .......
Name the CGS unit of work.
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A donkey is carrying a load on its back.
What is power? How do you differentiate kilowatt from kilowatt-hour? The Jog Falls in Karnataka state are nearly 20 m high. 2000 tonnes of waterfalls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s–2)
A man squatting on the ground gets straight up and stand. The force of reaction of ground on the man during the process is ______.
