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Does the escape speed of a body from the earth depend on (a) T
Physics Part-I
Physics Part-I

Class 11

NCERT

Publisher:
NCERT
Subject:
Physics
1

Chapter 1: Physical World

16 questions

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2

Chapter 2: Units and Measurements

51 questions

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3

Chapter 3: Motion in Straight Line

50 questions

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4

Chapter 4: Motion in a Plane

43 questions

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5

Chapter 5: Laws of motion

52 questions

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6

Chapter 6: Work, Energy and Power

41 questions

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7

Chapter 7: System of Particles and Rotational Motion

45 questions

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8

Chapter 8: Gravitation

33 questions

Q1
Choose the correct alternative:
(a) If the zero of potential energy is at infinity, the total energy of an orbiting satellite is negative of its kinetic / potential energy.
(b) The energy required to launch an orbiting satellite out of earths gravitational influence is more/less than the energy required to project a stationary object at the same height (as the satellite) out of earths influence.
Q2
Does the escape speed of a body from the earth depend on (a) The mass of the body, (b) The location from where it is projected, (c) The direction of projection, (d) The height of the location from where the body is launched?
Q3
A comet orbits the sun in a highly elliptical orbit. Does the comet have a constant (a) Linear speed, (b) angular speed, (c) Angular momentum, (d) Kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun.
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Does the escape speed of a body from the earth depend on (a) The mass of the body, (b) The location from where it is projected, (c) The direction of projection, (d) The height of the location from where the body is launched?

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Physics Part-I (NCERT)

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Does the escape speed of a body from the earth depend on (a) The mass of the body, (b) The location from where it is projected, (c) The direction of projection, (d) The height of the location from where the body is launched?
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Text SolutionText solutionverified iconVerified

For a body placed on the surface of the earth, Escape velocity,
The escape velocity is independent of mass of the body and the direction of projection. It depends upon the gravitational potential at the point from where the body is launched. Since this potential depends on the height of the point of projection, the escape velocity depends on it.
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Choose the correct alternative:
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Question Text
Does the escape speed of a body from the earth depend on (a) The mass of the body, (b) The location from where it is projected, (c) The direction of projection, (d) The height of the location from where the body is launched?
TopicGravitation
SubjectPhysics
ClassClass 11
Answer TypeText solution:1
Upvotes15