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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

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

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प्रश्न

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

पर्याय

MCQ
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उत्तर

Explanation:

Here, the trajectory of path which is followed by the projectile under the gravitational force of earth will be a conic section or parabolic or elliptical or focus must be with centre. So, accordingly, only is required which shows centre of earth as focus of trajectory.

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पाठ 8: Gravitation - Exercises [पृष्ठ ६२]

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एनसीईआरटी एक्झांप्लर Physics Exemplar [English] Class 11
पाठ 8 Gravitation
Exercises | Q 8.31 | पृष्ठ ६२

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).


What happens to the force between two objects, if the mass of one object is doubled?


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?


State two applications of universal law of gravitation.


Can two particles be in equilibrium under the action of their mutual gravitational force? Can three particles be? Can one of the three particles be?


Suppose the gravitational potential due to a small system is k/r2 at a distance r from it. What will be the gravitational field? Can you think of any such system? What happens if there were negative masses?


Four particles of equal masses M move along a circle of radius R under the action of their mutual gravitational attraction. Find the speed of each particle.


A tunnel is dug along a diameter of the earth. Find the force on a particle of mass m placed in the tunnel at a distance x from the centre.


State whether the gravitational force between two masses is attractive or repulsive ?  


Who stated the law of gravitation?


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:
Hammering a nail.


State Newton's law of gravitation. What is the difference between:
g and G?


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).


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.


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


Give the applications of universal law gravitation.


Law of gravitation gives the gravitational force between


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