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Choose the Correct Alternative: Acceleration Due to Gravity Increases/Decreases with Increasing Altitude.

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प्रश्न

Choose the correct alternative:

 Acceleration due to gravity increases/decreases with increasing altitude.

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उत्तर

Decreases

Acceleration due to gravity at depth h is given by the relation:

`g_h = (1-(2h)/Re)g`

Where,

`R_e` = Radius of the Earth

g = Acceleration due to gravity on the surface of the Earth

It is clear from the given relation that acceleration due to gravity decreases with an increase in height.

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पाठ 7: Gravitation - Exercises [पृष्ठ २०१]

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एनसीईआरटी Physics Part 1 and 2 [English] Class 11
पाठ 7 Gravitation
Exercises | Q 2.1 | पृष्ठ २०१

संबंधित प्रश्‍न

Write the answer of the question with reference to laws of gravitation.

State the universal law of gravitation.


The gravitational intensity at the centre of a hemispherical shell of uniform mass density has the direction indicated by the arrow (see Fig 8.12) (i) a, (ii) b, (iii) c, (iv) 0.


State the universal law of gravitation. Name the scientist who gave this law.


At noon, the sun and the earth pull the objects on the earth's surface in opposite directions. At midnight, the sun and the earth pull these objects in same direction. Is the weight of an object, as measured by a spring balance on the earth's surface, more at midnight as compared to its weight at noon?


The mass of moon is about 0.012 times that of earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:


A ball is thrown up with a speed of 4.9 ms-1.
Prove that the time of ascent is equal to the time of descent.


Where will you weigh more: at the centre of the earth or at the surface of the earth?


What does a force do in the following case?
You catch a kicked ball.


Name and state the action and reaction in the following case:
A person walking on the ground.


Show that gravity decreases at higher altitudes.


The ______ force is much weaker than other forces in nature.


To project the rockets which of the following principle(s) is /(are) required?


Give the applications of universal law gravitation.


Three uniform spheres, each having mass m and radius r, are kept in such a way that each touches the other two. The magnitude of the gravitational force on any sphere due to the other two is


Particles of masses 2M, m and M are respectively at points A, B and C with AB = ½ (BC). m is much-much smaller than M and at time t = 0, they are all at rest (Figure). At subsequent times before any collision takes place ______.


The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph where r is the distance of the point from the centre of the hollow spherical shell of uniform density.


The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph where r is the distance of the point from the centre of the hollow spherical shell of uniform density.


Complete the chart below.

F(N) M1(kg) M2(kg) D(m)
(a) 50 84 02
16 × 109 1.63 × 1022 (b) 34

Write the answer of the question with reference to laws of gravitation.

Write the value of the universal gravitational constant.


Observe the figure and answer the questions:

  1. State Newton's universal law of gravitation.
  2. If the distance between the two bodies is tripled, how will the gravitational force between them change?
  3. What will happen to gravitational force, if mass of one of the object is doubled?

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