Physics
A roller coaster is designed such that riders experience “weightlessness” as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between –
29
Aug
A roller coaster is designed such that riders experience “weightlessness” as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between – A roller coaster is designed such that riders experience "weightlessness" as they go round the [...]
A body projected vertically from the earth reaches a height equal to earth’s radius before returning to the earth. The power exerted by the gravitational force is greatest.
29
Aug
A body projected vertically from the earth reaches a height equal to earth’s radius before returning to the earth. The power exerted by the gravitational force is greatest. A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The power exerted by the gravitational force is [...]
Two spherical bodies of mass M and 5 M and radii R and 2 R are released in free space with initial separation between their centres equal to 12 R. If they attract each other due to gravitational force only. then the distance covered by the smaller body just before collision is
29
Aug
Two spherical bodies of mass M and 5 M and radii R and 2 R are released in free space with initial separation between their centres equal to 12 R. If they attract each other due to gravitational force only. then the distance covered by the smaller body just before collision is Dependence of intensity [...]
Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will.
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Aug
Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will. Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will. August 29, 2020 Category: Chapter 12 - Gravitation , NEET Last 32 Years Solved 1988 - 2019 Physics and [...]
The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A,B and C are KA, KB and KC respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun S as shown in the figure. Then.
29
Aug
The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A,B and C are KA, KB and KC respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun S as shown in the figure. Then. at positions A B and C are [...]
The figure shows elliptical orbit of a planet m about the sun S. The shaded area SCD is twice the shaded area SAB. If t1 is the time for the planet to move from C to D and t2 is the time to move from A to B then:
29
Aug
The figure shows elliptical orbit of a planet m about the sun S. The shaded area SCD is twice the shaded area SAB. If t1 is the time for the planet to move from C to D and t2 is the time to move from A to B then: Dependence of intensity of gravitational field [...]
A planet moving along an elliptical orbit is closest to the sun at a distance r1 and farthest away at a distance of r2. If v1 and v2 are the linear velocities at these points respectively, then the ratio v1/v2 is?
29
Aug
A planet moving along an elliptical orbit is closest to the sun at a distance r1 and farthest away at a distance of r2. If v1 and v2 are the linear velocities at these points respectively, then the ratio v1/v2 is? A planet moving along an elliptical orbit is closest to the sun at a [...]
Kepler’s third law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e T^2 = Kr^3 here K is constant. If the masses of sun and planet are M and m respectively than as per Newton’s law of gravitation force of attraction between them is F = r^2/GMm, here G is gravitational constant The relation between G and K is described as
29
Aug
Kepler’s third law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e T^2 = Kr^3 here K is constant. If the masses of sun and planet are M and m respectively than as per Newton’s law [...]
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct?
29
Aug
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct? If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude which of the following is not [...]
A compass needle which is allowed to move in horizontal plane is taken to a geomagnetic pole. It
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Aug
A compass needle which is allowed to move in horizontal plane is taken to a geomagnetic pole. It A compass needle which is allowed to move in horizontal plane is taken to a geomagnetic pole. It August 29, 2020 Category: Chapter 12 - Gravitation , NEET Last 32 Years Solved 1988 - 2019 Physics and [...]