Physics
Grade-10
Easy
Question
If the stone is thrown up vertically and returned to the ground, its potential energy is maximum:
- During the upward journey
- At the maximum height
- During the return journey
- At the bottom
Hint:
Potential energy is the stored energy that depends upon the relative position of various parts of a system.
P. E = mgh
The correct answer is: At the maximum height
If the stone is thrown up vertically and returned to the ground, its potential energy is maximum: At the maximum height
- When the stone is thrown it's kinetic energy starts to decrease and potential energy starts to increase until it reaches its maximum height where the potential energy reaches its maximum value.
- PE ∝h (Potential energy is maximum when h is maximum)
- When the stone returns or approaches back to the ground its potential energy starts to decrease as the height is decreasing and kinetic energy starts to increase.
- PE ∝h (Potential energy is maximum when h is maximum)
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