Class 9 Exam > Class 9 Questions > Find the incorrect statementa)K.E. is convert...
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Find the incorrect statement
- a)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the ground
- b)there is no transfer of energy between you and the rock when you push a huge rack and fail to move it
- c)body at rest may possess energy
- d)the P. E of a freely falling object increases progressively
Correct answer is option 'D'. Can you explain this answer?
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Find the incorrect statementa)K.E. is converted into heat and sound en...
Potential energy of an object is defined as the energy possessed by the object due to its position or change in shape.
Now, let's say, there is a stone on the ground. you lift it up to a certain height. Did you work? Yes. You did work in lifting it.
We know that energy is the capacity of doing work. It means when you lifted the stone from the ground, you did some work against gravity which means this stone possesses some energy now.
This stone has now some (gravitational) potential energy because it can do some work due to its position. For example, if you freely drop it from that certain height on your foot, you'll feel the pain. But what would happen if you dropped it from less height, you'd feel less pain.
See? This Potential energy of the fixed mass stone is directly proportional to height. As the height decreases, potential energy also decreases (and kinetic energy increases with increase in speed which makes the total energy conserved). You can conclude from this that the option D is wrong.
Now, let's say, there is a stone on the ground. you lift it up to a certain height. Did you work? Yes. You did work in lifting it.
We know that energy is the capacity of doing work. It means when you lifted the stone from the ground, you did some work against gravity which means this stone possesses some energy now.
This stone has now some (gravitational) potential energy because it can do some work due to its position. For example, if you freely drop it from that certain height on your foot, you'll feel the pain. But what would happen if you dropped it from less height, you'd feel less pain.
See? This Potential energy of the fixed mass stone is directly proportional to height. As the height decreases, potential energy also decreases (and kinetic energy increases with increase in speed which makes the total energy conserved). You can conclude from this that the option D is wrong.
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Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer?
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Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer?.
Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer?.
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Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Find the incorrect statementa)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundb)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itc)body at rest may possess energyd)the P. E of a freely falling object increases progressivelyCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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