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The potential energy of a freely falling object decreases prog
Science
Science

Class 9

NCERT

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Matter in Our Surroundings

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2

Chapter 2: Is Matter Around Us Pure?

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3

Chapter 3: Atoms and Molecules

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4

Chapter 4: Structure of the Atom

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5

Chapter 5: The Fundamental Unit of Life

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6

Chapter 6: Tissues

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7

Chapter 7: Diversity in Living Organisms

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8

Chapter 8: Motion

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9

Chapter 9: Force and Laws of Motion

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10

Chapter 10: Work and Energy

23 questions

Q1
A mass of is at a point on a table. It is moved to a point . If the line joining and is horizontal what is the work done on the object by the gravitational force? Explain your answer.
Q2
The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
Q3
What are the various energy transformations that occur when you are riding a bicycle?
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11

Chapter 11: Sound

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12

Chapter 12: Why do We Fall Ill?

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13

Chapter 13: Natural Resourses

6 questions

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14

Chapter 14: Improvement in Food Resources

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15

Chapter 15: Gravitation

29 questions

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Question
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The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?

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Updated on: Sep 16, 2023

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The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
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No, it does not violate the law of conservation of energy.
According to conservation of energy,        
Thus for a freely falling object, its potential energy decreases but kinetic energy increases in such a way that its total mechanical energy remains constant.
Moreover, potential energy of a freely falling object is converted into its kinetic energy.
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Question Text
The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
Updated OnSep 16, 2023
TopicWork and Energy
SubjectScience
ClassClass 9
Answer TypeText solution:1 Video solution: 5
Upvotes590
Avg. Video Duration6 min