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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 formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.


What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 × 1024 kg and radius of the earth is 6.4 × 106 m).


Answer the following:

You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?


Choose the correct alternative:

Acceleration due to gravity is independent of mass of the earth/mass of the body.


State and explain Kepler's laws of planetary motion. Draw diagrams to illustrate these laws.


Inside a uniform spherical shell
(a) the gravitational potential is zero
(b) the gravitational field is zero
(c) the gravitational potential is same everywhere
(d) the gravitational field is same everywhere


How will the force of gravitation between two objects change if the distance between them is:
Doubled


How will the force of gravitation between two objects change if the distance between them is:
Made four times


Is the law of gravitation applicable in case of the sun and the moon?


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


Gravity is another kind of ________. It exerts all through the ________. The Sun's gravity keeps the ___________ in their orbits. Gravity can only be felt with very large ________.


The distance-time values for an object moving along straight line are given below:

Time (s) Distance (m)
0 0
1 1
2 8
3 27

 


Solve the following problem.

Calculate the acceleration due to gravity at a height of 300 km from the surface of the Earth. (M = 5.98 × 1024 kg, R = 6400 km).


Law of gravitation gives the gravitational force between


As observed from earth, the sun appears to move in an approximate circular orbit. For the motion of another planet like mercury as observed from earth, this would ______.


How is the gravitational force between two point masses affected when they are dipped in water keeping the separation between them the same?


Complete the chart below.

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

Find the gravitational force of attraction between the ring and sphere as shown in the diagram, where the plane of the ring is perpendicular to the line joining the centres. If `sqrt8` R is the distance between the centres of a ring (of mass 'm')and a sphere (mass 'M') where both have equal radius 'R'.

 


Ocean tides on Earth are mainly caused by ______.


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