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Choose the wrong option. - Physics

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प्रश्न

Choose the wrong option.

पर्याय

  • Inertial mass is a measure of difficulty of accelerating a body by an external force whereas the gravitational mass is relevant in determining the gravitational force on it by an external mass.

  • That the gravitational mass and inertial mass are equal is an experimental result.

  • That the acceleration due to gravity on earth is the same for all bodies is due to the equality of gravitational mass and inertial mass.

  • Gravitational mass of a particle like proton can depend on the presence of neighouring heavy objects but the inertial mass cannot.

MCQ
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उत्तर

Gravitational mass of a particle like proton can depend on the presence of neighouring heavy objects but the inertial mass cannot.

Explanation:

Inertial mass: It is the mass of the material body, which measures its inertia.

Gravitational Mass: It is the mass of the material body, which determines the gravitational pull acting upon it.

According to the principle of equivalence, the Gravitational mass of proton is equivalent to its inertial mass and is independent of the presence of neighbouring heavy objects.

Important point: Comparison between inertial and gravitational mass:

  • Both are measured in the same units.
  • Both are scalars.
  • Both do not depend on the shape and state of the body.
  • Inertial mass is measured by applying Newton’s second law of motion whereas gravitational mass is measured by applying Newton’s law of gravitation.
  • Spring balance measures gravitational mass and inertial balance measure inertial mass.
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पाठ 8: Gravitation - Exercises [पृष्ठ ५९]

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एनसीईआरटी एक्झांप्लर Physics [English] Class 11
पाठ 8 Gravitation
Exercises | Q 8.7 | पृष्ठ ५९

संबंधित प्रश्‍न

How does the force of gravitation between two objects change when the distance between them is reduced to half?


What happens to the force between two objects, if the distance between the objects is doubled and tripled?


Choose the correct alternative:

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


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.


A person sitting in a chair in a satellite feels weightless because


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 semicircular wire has a length L and mass M. A particle of mass m is placed at the centre of the circle. Find the gravitational attraction on the particle due to the wire.


What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.


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


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


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.


Solve the following problem.

Find the gravitational force between the Sun and the Earth.
Given Mass of the Sun = 1.99 × 1030 kg
Mass of the Earth = 5.98 × 1024 kg
The average distance between the Earth and the Sun = 1.5 × 1011 m.


State the universal law of gravitation and derive its mathematical expression.


Give the applications of universal law gravitation.


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 ______.


If three equal masses m are placed at the three vertices of an equilateral triangle of side 1/m then what force acts on a particle of mass 2m placed at the centroid?


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?

If the mass of one object is doubled and distance remains the same, the gravitational force will:


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