Questions by varun

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A particle is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done per unit mass against the gravitational force between them, to take the particle far away from the sphere (you may take `h=6.67 xx 10^(-11) Nm^2kg^(-2))`

asked Mar 19, 2022 in 11th Physics

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The gravitational potential energy of a system consisting two particles separated by a distance r

asked Mar 19, 2022 in 11th Physics

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The mass of the earth is `6.00 xx 10^(24) kg` and that of the moon is `7.40 xx 10^(22) kg`. The constant of gravitation `G=6.67 xx 10^(-11) N-m^2kg^(-2)`. The potential energy of the system is `- 7.79 xx 10^(28)J`.The mean distance between the earth and the moon

asked Mar 19, 2022 in 11th Physics

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Two point masses `m_1 and m^2` are separated by a distance `r`. The gravitational potential energy of the system is `G_1`. When the separation between the particles is doubled, the gravitational potential energy is `G_2` . Then, the ratio of `G_1/G_2`

asked Mar 19, 2022 in 11th Physics

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Gravitational potential energy of a system of particles as shown in the figure

asked Mar 19, 2022 in 11th Physics

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Escape velocity of a body on the surface of earth is independent

asked Mar 19, 2022 in 11th Physics

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An object is thrown from the surface of the moon. The escape speed for the object

asked Mar 19, 2022 in 11th Physics

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A body is projected vertically upwards from the surface of a planet of radius `R` with a velocity equal to 1/3rd of the escape velocity for the planet. The maximum height attained by the body

asked Mar 19, 2022 in 11th Physics

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Two planets A and B have the same material density. If the radius of A is twice that of B, then the ratio of escape velocity `(v_A)/(v_B)`

asked Mar 19, 2022 in 11th Physics

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Escape velocity on earth is `11.2 kms^(-1)`, what would be the escape velocity on a planet whose mass is 1000 times and radius is 10 times that of

asked Mar 19, 2022 in 11th Physics

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The time period of a satellite in a circular orbit around a planet is independent

asked Mar 19, 2022 in 11th Physics

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An artificial satellite is revolving around the earth, close to its surface. Find the orbital velocity of artificial satellite? (Take, radius of earth = 6400

asked Mar 19, 2022 in 11th Physics

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Two satellites A and B go around a planet P in circular orbits having radius `4 R and R`, respectively. If the speed of satellite A is `3v`, then the speed of satellite B will

asked Mar 19, 2022 in 11th Physics

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An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy `E_0`. Its potential energy and kinetic energy respectively

asked Mar 19, 2022 in 11th Physics

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

asked Mar 19, 2022 in 11th Physics

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The time period of geo-stationary satellite

asked Mar 19, 2022 in 11th Physics

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

asked Mar 19, 2022 in 11th Physics

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An astronaut experiences weightlessness in a space satellite. It is

asked Mar 19, 2022 in 11th Physics

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

asked Mar 19, 2022 in 11th Physics

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Weight of a body is maximum at

asked Mar 19, 2022 in 11th Physics

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