Advertisements
Advertisements
प्रश्न
A body of mass m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?
Advertisements
उत्तर
At height h1, initial potential energy of body = mgh1
At height h2, final potential energy of body = mgh2
Loss in potential energy = Initial potential energy − Final potential energy
= (mgh1 − mgh2)
= mg (h1 − h2)
संबंधित प्रश्न
Fill in the blank
An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A compressed spring
State two characteristic which a source of energy must have.
Why using wood as fuel is not advisable although wood is a renewable source of energy?
What is hydro energy?
Write five forms of energy.
What kind of energy is possessed in a situation when?
A stone lying on the top of roof.
What kind of energy is possessed in a situation when?
A shooting arrow.
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
Give one example when:
Electric energy changes to mechanical energy.
