Advertisements
Advertisements
प्रश्न
State two factors on which the potential energy of a body at a certain height above the ground depends.
उत्तर
The potential energy of a body in the raised position depends upon the following two factors:
(a) The mass of the body: Greater the mass of the body, greater is the potential energy of the body.
(b) Its height above the ground: Higher the height of the body, greater is its potential.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
The ability to do work is called ______
Fill in the blank
The S.I.unit of energy is ______
Name two units of power bigger than watt.
How many joules are there in one kilowatt-hour?
Name the quantity whose unit is :
(a) kilowatt
(b) kilowatt-hour
- Take two aluminium channels of different lengths.
- Place the lower ends of the channels on the floor and hold their upper ends at the same height.
- Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance.
- At the moment of releasing the balls, which energy do the balls have?
- As the balls roll down which energy is converted into which other form of energy?
- Why do the balls cover the same distance on rolling down?
Note: The question is wrong. It should be "Why do the balls cover the same distance after rolling down"? - What is the form of the eventual total energy of the balls?
- Which law related to energy does the above activity demonstrate? Explain.
The capacity that an object has for doing work is called ______.
Which one of the following requires wind energy?
Write the type of energy.
When a body falls freely towards the earth, then its total energy
