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A satellite is revolving in a circular orbit at a height ‘h’ from the earth’s surface (radius of earth R, h ltltR). The minimum increase in its orbital velocity required, So that the satellite could escape from the erth’s gravitational field, is close to :(Neglect the effect of atomsphere.)
06
Oct
A satellite is revolving in a circular orbit at a height ‘h’ from the earth’s surface (radius of earth R, h ltltR). The minimum increase in its orbital velocity required, So that the satellite could escape from the erth’s gravitational field, is close to :(Neglect the effect of atomsphere.) A satellite is revolving in a [...]
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A satellite is revolving in a circular orbit at a height 'h' from the earth's surface (radius of earth R ,
h ltltR). The minimum increase in its orbital velocity required ,
is close to :(Neglect the effect of atomsphere.) ,
So that the satellite could escape from the erth's gravitational field ,
Four particles, each of mass M and equidistant from each other, move along a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is:
06
Oct
Four particles, each of mass M and equidistant from each other, move along a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is: each of mass M and equidistant from each other Four particles move along a circle of radius R under the action of their [...]
From a solid sphere of mass M and radius R, a spherical portion of radius R/2 is removed, as shown in the figure Taking gravitational potential V= 0at r= ∞, the potential at (G = gravitational constatn)
06
Oct
From a solid sphere of mass M and radius R, a spherical portion of radius R/2 is removed, as shown in the figure Taking gravitational potential V= 0at r= ∞, the potential at (G = gravitational constatn) a spherical portion of radius R/2 is removed as shown in the figure Taking gravitational potential V= 0at [...]
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R?
06
Oct
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R? What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass [...]
The mass of a spaceship is 1000 kg. It is to be launched from the earth’s surface out into free space. The value of g and R (radius of earth) are 10 ms^2 and 6400 km respectively. The required energy for this work will be:
06
Oct
The mass of a spaceship is 1000 kg. It is to be launched from the earth’s surface out into free space. The value of g and R (radius of earth) are 10 ms^2 and 6400 km respectively. The required energy for this work will be: Find the percentage decrease in weight of a body when [...]
Two bodies of masses m and 4 m are placed at a distance r. The gravitational potential at a point on the line joining them where the gravitational field is zeo is
06
Oct
Two bodies of masses m and 4 m are placed at a distance r. The gravitational potential at a point on the line joining them where the gravitational field is zeo is Two bodies of masses m and 4 m are placed at a distance r. The gravitational potential at a point on the line [...]
An artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of escape velocity from the surface of earth. R is the radius of earth and g is acceleration due to gravity at the surface of earth. (R = 6400 km).
06
Oct
An artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of escape velocity from the surface of earth. R is the radius of earth and g is acceleration due to gravity at the surface of earth. (R = 6400 km). Find the percentage decrease in [...]
The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the fve, where ve is its escape velocity form the surface of the earth. The value of f is
06
Oct
The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the fve, where ve is its escape velocity form the surface of the earth. The value of f is The earth is assumed to be a sphere of radius R. A platform [...]
A man can throw a ball at a speed on the earth which can cross a river of width 10 m. Ravi reaches on an imaginary planet whose mean density is twice that of the earth. Find out the maximum possible radius of the planet so that if Ravi throws the ball at the same speed it may escape from the planet. Given radius of the earth = 6.4 × 10^6 m.
06
Oct
A man can throw a ball at a speed on the earth which can cross a river of width 10 m. Ravi reaches on an imaginary planet whose mean density is twice that of the earth. Find out the maximum possible radius of the planet so that if Ravi throws the ball at the same [...]
A sky laboratory of mass 3 × 10^3 kg has to be lifted from one circular orbit of radius 2 R into another circular orbit of radius 3R. Calculate the minimum energy required if the radius of earth is R = 6.4 × 10^6 m and g = 10 m/s^2.
06
Oct
A sky laboratory of mass 3 × 10^3 kg has to be lifted from one circular orbit of radius 2 R into another circular orbit of radius 3R. Calculate the minimum energy required if the radius of earth is R = 6.4 × 10^6 m and g = 10 m/s^2. Find the percentage decrease in [...]