Advertisements
Advertisements
प्रश्न
A ball is placed on a compressed spring. What form of energy does the spring possess? On releasing the spring, the ball flies away. Give a reason.
Advertisements
उत्तर
The compressed spring has elastic potential energy due to its compressed state. When it is released, the potential energy of the spring changes into kinetic energy which does work on the ball if placed on it and changes into kinetic energy of the ball due to which it flies away.
APPEARS IN
संबंधित प्रश्न
A body falls freely under gravity from rest. Name the kind of energy it will possess while falling.
State whether the object possess kinetic energy, potential energy, or both :
A flying aeroplane _______________.
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value of the stone?
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
What do you understand by the term 'transformation of energy"? Explain with an example.
Name the energy transfers which occur when someone speaks into a microphone.
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
When an object falls freely towards the earth, then its total energy :
