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प्रश्न
The value of universal gravitational constant (G) in the SI unit is ______.
विकल्प
6.673 × 10−11 Nm2/kg2
6.673 × 1011 Nm/kg
9.673 × 10−11 Nm/kg
9.673 × 10−11 Nm2/kg2
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उत्तर
The value of universal gravitational constant (G) in the SI unit is 6.673 × 10-11 Nm2/kg2.
Explanation:
This constant appears in Newton's law of gravitation and determines the strength of the gravitational force between two masses.
संबंधित प्रश्न
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:
An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity?
How will you ‘weigh the sun’, that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 × 108 km.
State Kepler’s law which is represented by the relation r3 ∝ T2.
Can we apply Newton’s third law to the gravitational force ? Explain your answer.
Universal law of gravitation states that every object exerts a gravitational force of attraction on every other object. If this is true, why don’t we notice such forces ? Why don’t the two objects in a room move towards each other due to this force ?
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
Three equal masses m are placed at the three corners of an equilateral triangle of side a. Find the force exerted by this system on another particle of mass m placed at (a) the mid-point of a side, (b) at the centre of the triangle.
A tunnel is dug along a chord of the earth at a perpendicular distance R/2 from the earth's centre. The wall of the tunnel may be assumed to be frictionless. Find the force exerted by the wall on a particle of mass m when it is at a distance x from the centre of the tunnel.
The gravitational field in a region is given by \[E = \left( 2 \overrightarrow{i} + 3 \overrightarrow{j} \right) N {kg}^{- 1}\] . Show that no work is done by the gravitational field when a particle is moved on the line 3y + 2x = 5.
[Hint : If a line y = mx + c makes angle θ with the X-axis, m = tan θ.]
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
Where will you weigh more: at the moon's surface or at the earth's surface?
What does a force do in the following case?
You twist a piece of rubber.
Name and state the action and reaction in the following case:
A person walking on the ground.
Why does a ball moving on a table top eventually stops?
What do you mean by a gravitational constant?
The force of gravitation between two bodies of mass 1 kg each separated by a distance of 1 m in vacuum is ____________.
The acceleration of the Moon towards the Earth is approximately ______.
