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The kinetic energy of the satellite in a circular orbit with speed `v` is given

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The time period of geo-stationary satellite

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Geo-stationary satellites are placed in equatorial orbits at the height

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An astronaut experiences weightlessness in a space satellite. It is

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A pendulum beats sounds on the earth. Its time period on a stationary satellite of the earth will

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Weight of a body is maximum at

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The ratio of the magnitude of potential energy and kinetic energy of a satellite is

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Weightlessness experienced while orbiting the earth in spaceship, is the result of

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If the gravitational attraction of earth suddenly disappears, then which of the following statement is

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Study the following statements and choose the incorrect option. I. `G` is not equal to `6.67 xx 10^(-11)Nm^(-2)kg^(-2)` on the surface of earth.II. The escape velocity on the surface of earth is lesser than the escape velocity from moon’s surface. III. The angular momentum of a satellite going around the earth remains conserved.IV. The relation, `g=(GM)/r^2` holds good for r all the celestial

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Match the Column I (quantities) with Column II (approximate values) and select the correct answer from the codes given below. Column I Column II A. Escape velocity of earth p. `1.6 m'/'s^2` B. Gravitational acceleration at moon’s surface q. `6400 km` C. Radius of earth r. `11.2 km'/'s`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A satellite of mass m revolving with a velocity v around the earth. With reference to the above situation, match the Column I (types of energy) with Column II (expression) and select the correct answer from the codes given below. Column I Column II A. Kinetic energy of the satellite p. `-1/2mv^2` B. Potential energy of the satellite q. `1/2mv^2` C. Total energy of the satellite r. `-mv^2`

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Assertion: Newton’s law of universal gravitation states that a particle attracts every other particle in the universe using a force of attraction that is directly proportional to the product of their masses and inversely proportional to the square of distance between them.Reason: Law of gravitation is analogous to magnetic force between the moving

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Assertion: The value of acceleration due to gravity does not depend upon mass of the body on which force is applied. Reason: Acceleration due to gravity is a variable

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Assertion: As we go up the surface of the earth, we feel light weighed than on the surface of the earth. Reason: The acceleration due to gravity decreases on going up above the surface of the

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Assertion: Work done by or against gravitational force in moving a body from one point to another is independent of the actual path followed between the two points. Reason: This is because gravitational forces are conservative in

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Assertion: If gravitational potential at some point is positive, then the gravitational field strength at that point will also be zero. Reason: Except at infinity gravitational potential due to a system of point masses at some finite distance cannot be

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Assertion: The force of attraction between a hollow spherical shell of uniform density and a point mass situated inside it, is zero. Reason: The value of G does not depend on the nature and size of the

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Assertion: Moon has no atmosphere. Reason: The escape speed for the moon is much

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Assertion: The escape velocity for a planet is `v_e=sqrt(2gR)`. If the radius of the planet is four times, the escape velocity becomes half `(i.e. v_e'=(v_e)/2)`.Reason: In the relation for escape velocity, `v_e =sqrt(2gR)`, the acceleration due to gravity `g` is inversely proportional to radius of the planet. Thus, `v_e prop

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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