Get 2 FREE Instant-Explanations on Filo with code FILOAPP

Home

Physics Part-I

Gravitation

The escape speed of a projectile on the earth's surface is 11.

Physics Part-I

Class 11

NCERT

Chapter 1: Physical World

16 questions

Chapter 2: Units and Measurements

51 questions

Chapter 3: Motion in Straight Line

50 questions

Chapter 4: Motion in a Plane

43 questions

Chapter 5: Laws of motion

52 questions

Chapter 6: Work, Energy and Power

41 questions

Chapter 7: System of Particles and Rotational Motion

45 questions

Chapter 8: Gravitation

33 questions

A rocket is fired vertically with a speed of

5 km s^{- 1}

from the Earth's surface. How far from the Earth does the rocket go before returning to the Earth ? Mass of the earth

= 6.0 \times 1 0^{24} k g

; mean radius of the radius of the Earth

= 6.4 \times 1 0^{6} m

;

G = 6.67 \times 1 0^{- 11} N m^{2} k g^{- 2}

The escape speed of a projectile on the earth's surface is

11.2 km s^{- 1}

. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

A satellite orbits the earth at a height of 400 km above the surface. How much energy must be expended to rocket the satellite out of the earth's gravitational influence? Mass of the satellite

= 200 k g

; mass of the earth

= 6.0 \times 1 0^{24} k g

; radius of the earth

= 6.4 \times 1 0^{6} m

; G =

6.67 \times 1 0^{- 11} N m^{2} k g^{- 2}

View all question

Question

Medium

Solving time: 2 mins

The escape speed of a projectile on the earth's surface is $11.2 km s^{- 1}$ . A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

Views: 5,983 students

Updated on: Apr 24, 2023

Book:

Physics Part-I (NCERT)

Found 4 tutors discussing this question

Harper Discussed

The escape speed of a projectile on the earth's surface is

11.2 km s^{- 1}

. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

5 mins ago

Discuss this question LIVE

5 mins ago

Text solutionVerified

Escape velocity of a projectile from the Earth, $v_{esc} = 11.2 km / s$
Projection velocity of the projectile, $v_{p} = 3 v_{esc}$
Mass of the projectile $= m$
Let velocity of the projectile far away from the Earth $= v_{f}$

Total energy of the projectile on the Earth $= \frac{1}{2} m v_{p}^{2} - \frac{1}{2} m v_{esc}^{2}$

Gravitational potential energy of the projectile far away from the Earth is zero.
Total energy of the projectile far away from the Earth $= \frac{1}{2} m v_{f}^{2}$

From the law of conservation of energy, we have
$\frac{1}{2} m v_{p}^{2} - \frac{1}{2} m v_{esc}^{2} = \frac{1}{2} m v_{f}^{2}$

$v_{f} = v_{p}^{2} - v_{esc}^{2}$

$= 8 v_{esc}$
$= 8 \times 11.2$
$= 31.68 km / s$

Was this solution helpful?

Report

Filo tutor solutions (11)

Learn from their 1-to-1 discussion with Filo tutors.

25 mins

Uploaded on: 4/23/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

Shashi Kumar Gupta

Total classes on Filo by this tutor - 16,726

Teaches : Physics, Mathematics, Algebra

Connect instantly with this tutor

Connect now

Notes from this class (13 pages)

Download

Was this solution helpful?

132

Report

12 mins

Uploaded on: 1/23/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

Pramod Kumar Singh

Total classes on Filo by this tutor - 9,789

Teaches : Physics, Mathematics

Connect instantly with this tutor

Connect now

Notes from this class (4 pages)

Download

Was this solution helpful?

Report

1 mins

Uploaded on: 3/25/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

Subhadeep Deb Roy

Total classes on Filo by this tutor - 9,477

Teaches : Physics, Mathematics, Inorganic Chemistry

Connect instantly with this tutor

Connect now

Notes from this class (1 pages)

Download

Was this solution helpful?

144

Report

See more 1-on-1 discussions (8)

One destination for complete JEE/NEET preparation

One destination to cover all your homework and assignment needs

Learn Practice Revision Succeed

Instant 1:1 help, 24x7

60, 000+ Expert tutors

Textbook solutions

Big idea maths, McGraw-Hill Education etc

Essay review

Get expert feedback on your essay

Schedule classes

High dosage tutoring from Dedicated 3 experts

Trusted by 4 million+ students

Practice more questions from Physics Part-I (NCERT)

A rocket is fired vertically with a speed of

5 km s^{- 1}

from the Earth's surface. How far from the Earth does the rocket go before returning to the Earth ? Mass of the earth

= 6.0 \times 1 0^{24} k g

; mean radius of the radius of the Earth

= 6.4 \times 1 0^{6} m

;

G = 6.67 \times 1 0^{- 11} N m^{2} k g^{- 2}

The escape speed of a projectile on the earth's surface is

11.2 km s^{- 1}

. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

A satellite orbits the earth at a height of 400 km above the surface. How much energy must be expended to rocket the satellite out of the earth's gravitational influence? Mass of the satellite

= 200 k g

; mass of the earth

= 6.0 \times 1 0^{24} k g

; radius of the earth

= 6.4 \times 1 0^{6} m

; G =

6.67 \times 1 0^{- 11} N m^{2} k g^{- 2}

View all

Stuck on the question or explanation?

Connect with our Physics tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Question Text	The escape speed of a projectile on the earth's surface is $11.2 km s^{- 1}$ . A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.
Updated On	Apr 24, 2023
Topic	Gravitation
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 11
Upvotes	1210
Avg. Video Duration	9 min

The escape speed of a projectile on the earth's surface is $11.2 km s^{- 1}$ . A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

Text solutionVerified

Filo tutor solutions (11)

Practice more questions from Physics Part-I (NCERT)

Practice questions from Physics Part-I (NCERT)

Practice more questions from Gravitation

Practice questions on similar concepts asked by Filo students

The escape speed of a projectile on the earth's surface is 11.2 kms−1. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

Text solutionVerified

Filo tutor solutions (11)

Practice more questions from Physics Part-I (NCERT)

Practice questions from Physics Part-I (NCERT)

Practice more questions from Gravitation

Practice questions on similar concepts asked by Filo students

Related books for questions on Gravitation

The escape speed of a projectile on the earth's surface is $11.2 km s^{- 1}$ . A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.