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Answer the following question. What are the dimensions of the universal gravitational constant?

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प्रश्न

Answer the following question.

What are the dimensions of the universal gravitational constant?

एका वाक्यात उत्तर
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उत्तर

The dimensions of universal gravitational constant are: [L3M-1T-2].

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पाठ 5: Gravitation - Exercises [पृष्ठ ९७]

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बालभारती Physics [English] Standard 11 Maharashtra State Board
पाठ 5 Gravitation
Exercises | Q 2. (iii) | पृष्ठ ९७

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).


If the moon attracts the earth, why does the earth not move towards the moon?


A rocket is fired from the earth towards the sun. At what distance from the earth’s centre is the gravitational force on the rocket zero? Mass of the sun = 2 ×1030 kg, mass of the earth = 6 × 1024 kg. Neglect the effect of other planets etc. (orbital radius = 1.5 × 1011 m).


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?


Can you think of two particles which do not exert gravitational force on each other?


A person brings a mass of 1 kg from infinity to a point A. Initially the mass was at rest but it moves at a speed of 2 m s −1 as it reaches A. The work done by the person on the mass is −3 J. The potential at A is


Two spherical balls of mass 10 kg each are placed 10 cm apart. Find the gravitational force of attraction between them.


A particle of mass 100 g is kept on the surface of a uniform sphere of mass 10 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle away from the sphere.


Define one Newton. How much maximum acceleration can it produce in a mass of 1 kg?


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


The force of attraction between any two material objects is called __________.


Why don't you feel the force of attraction between your friend sitting close to you and yourself?


What does a force do in the following case?
You pull the skin of your arm


Name and state the action and reaction in the following case:
A book lying on a table.


Two equal and opposite forces acting at the same point on a stationary body. Will the body move? Give reason to explain your answer.


Explain why:
The atmosphere does not escape.


Is there a gravitational attraction between you and the book? Explain.


An apple falls towards the earth due to its gravitational force. The apple also attracts the earth with the same force. Why do we not see the earth rising towards the apple? Explain.


The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is _______ of the distance between them.


For the weight of body of mass 5 kg to be zero on equator of the earth, angular velocity of the earth must be (The radius of earth = 6400 km, acceleration due to gravity = 10 m/s2).


Choose the wrong option.


We can shield a charge from electric fields by putting it inside a hollow conductor. Can we shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?


Shown are several curves (Figure). Explain with reason, which ones amongst them can be possible trajectories traced by a projectile (neglect air friction).


Four identical particles of equal masses 1 kg made to move along the circumference of a circle of radius 1 m under the action of their own mutual gravitational attraction. The speed of each particle will be ______.


Newton's universal law of gravitation applies to ______.


Newton formulated the Universal Law of Gravitation by combining the ideas of which two scientists with his own Laws of Motion?


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