Chapter 10 – Gravitation
Statement I: For a satellite revolving very near to the earth’s surface the time period of revolution is given by 1h24 min. Statement II: The period of revolution of a satellite depends only upon its height above the earth’s surface.
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Sep
Statement I: For a satellite revolving very near to the earth’s surface the time period of revolution is given by 1h24 min. Statement II: The period of revolution of a satellite depends only upon its height above the earth’s surface. In order to shift a body of mass m from a circular orbit of radius [...]
Statement-1: For the planets orbiting around the sun, angular speed, linear speed, KE changes with time,but angular momentum remains constant. Statement-2: No torque is acting on the rotating planet, so its angular momentum is constant.
13
Sep
Statement-1: For the planets orbiting around the sun, angular speed, linear speed, KE changes with time,but angular momentum remains constant. Statement-2: No torque is acting on the rotating planet, so its angular momentum is constant. angular speed but angular momentum remains constant. Statement-2: No torque is acting on the rotating planet KE changes with time [...]
A planet is revolving in an elliptical orbit around the Sun. Its closest distance from the Sun is rmin and the farthest distance is rmax. If the velocity of the planet at the distance of the closest approach is ν1 and that at the farthest distance from the Sun is ν2 , then { ν1 }/{ ν2 }
13
Sep
A planet is revolving in an elliptical orbit around the Sun. Its closest distance from the Sun is rmin and the farthest distance is rmax. If the velocity of the planet at the distance of the closest approach is ν1 and that at the farthest distance from the Sun is ν2 , then { ν1 [...]
The value of g at a certain height h above the free surface of the earth is x/4 where x is the value of g at the surface of the earth. The height h is
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Sep
The value of g at a certain height h above the free surface of the earth is x/4 where x is the value of g at the surface of the earth. The height h is The value of g at a certain height h above the free surface of the earth is x/4 where x [...]
A tunnel is dug along a diameter of the earth. If Me and Re are the mass and radius, respectively, of the earth, then the force on a particle of mass m placed in the tunnel at a distance r from the centre is :
13
Sep
A tunnel is dug along a diameter of the earth. If Me and Re are the mass and radius, respectively, of the earth, then the force on a particle of mass m placed in the tunnel at a distance r from the centre is : A tunnel is dug along a diameter of the earth. [...]
A uniform ring of mass m and radius r is placed directly above a uniform sphere of mass M and of equal radius. The centre of the ring is directly above the centre of the sphere at a distance r root 3 as shown in the figure. The gravitational force exerted by the sphere on the ring will be.
13
Sep
A uniform ring of mass m and radius r is placed directly above a uniform sphere of mass M and of equal radius. The centre of the ring is directly above the centre of the sphere at a distance r root 3 as shown in the figure. The gravitational force exerted by the sphere on [...]
In order to shift a body of mass m from a circular orbit of radius 3R to a higher orbit of radius 5R around the earth, the work done is?
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Sep
In order to shift a body of mass m from a circular orbit of radius 3R to a higher orbit of radius 5R around the earth, the work done is? In order to shift a body of mass m from a circular orbit of radius 3R to a higher orbit of radius 5R around the [...]
If the mass of a planet is 10% less than that of the earth and the radius is 20% greater than that of the earth, the acceleration due to gravity on the plant will be
13
Sep
If the mass of a planet is 10% less than that of the earth and the radius is 20% greater than that of the earth, the acceleration due to gravity on the plant will be If the mass of a planet is 10% less than that of the earth and the radius is 20% greater [...]
What is the mass of the planet that has a satellite whose time period is T and orbital radius is r?
13
Sep
What is the mass of the planet that has a satellite whose time period is T and orbital radius is r? What is the mass of the planet that has a satellite whose time period is T and orbital radius is r? September 13, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter [...]
The minimum energy required to launch a m kg satellite from earth’s surface in a circular orbit at an altitude of 2R where R is the radius of earth is
13
Sep
The minimum energy required to launch a m kg satellite from earth’s surface in a circular orbit at an altitude of 2R where R is the radius of earth is The minimum energy required to launch a m kg satellite from earth's surface in a circular orbit at an altitude of 2R where R is [...]