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A mass of 10 kg is at a point A on a table. It is moved to a p

Science

Class 9

NCERT

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Chapter 10: Work and Energy

23 questions

Certain force acting on a

20 k g

mass changes its velocity from

5 m s^{- 1}

2 m s^{- 1}

. Calculate the work done by the force.

A mass of

10 k g

is at a point

A

on a table. It is moved to a point

B

. If the line joining

A

and

B

is horizontal what is the work done on the object by the gravitational force? Explain your answer.

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

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Chapter 14: Improvement in Food Resources

Chapter 15: Gravitation

29 questions

Question

Easy

Solving time: 3 mins

A mass of $10 k g$ is at a point $A$ on a table. It is moved to a point $B$ . If the line joining $A$ and $B$ is horizontal what is the work done on the object by the gravitational force? Explain your answer.

Views: 5,792 students

Updated on: May 2, 2023

Book:

Science (NCERT)

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Alexander Discussed

A mass of

10 k g

is at a point

A

on a table. It is moved to a point

B

. If the line joining

A

and

B

is horizontal what is the work done on the object by the gravitational force? Explain your answer.

6 mins ago

Discuss this question LIVE

6 mins ago

Text solutionVerified

Force of gravity and displacement are perpendicular to each other.

Hence, work done is zero.

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Practice more questions from Science (NCERT)

Certain force acting on a

20 k g

mass changes its velocity from

5 m s^{- 1}

2 m s^{- 1}

. Calculate the work done by the force.

A mass of

10 k g

is at a point

A

on a table. It is moved to a point

B

. If the line joining

A

and

B

is horizontal what is the work done on the object by the gravitational force? Explain your answer.

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

View all

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Question Text	A mass of $10 k g$ is at a point $A$ on a table. It is moved to a point $B$ . If the line joining $A$ and $B$ is horizontal what is the work done on the object by the gravitational force? Explain your answer.
Updated On	May 2, 2023
Topic	Work and Energy
Subject	Science
Class	Class 9
Answer Type	Text solution:1 Video solution: 12
Upvotes	1233
Avg. Video Duration	3 min

Time (in minutes) →	0	2	4	6	8	10
Temperature (in ºC) →	t₁	t₂	t₃	t₄	t₅	t₆

A mass of $10 k g$ is at a point $A$ on a table. It is moved to a point $B$ . If the line joining $A$ and $B$ is horizontal what is the work done on the object by the gravitational force? Explain your answer.

Text solutionVerified

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A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal what is the work done on the object by the gravitational force? Explain your answer.

Text solutionVerified

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A mass of $10 k g$ is at a point $A$ on a table. It is moved to a point $B$ . If the line joining $A$ and $B$ is horizontal what is the work done on the object by the gravitational force? Explain your answer.