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The gravitational field in a region is given by E = ( 3i – 4j ) N/ kg. Find out the work done ( in joule) in displacing a particle by 1 m along the line 4y = 3x +9.
06
Oct
The gravitational field in a region is given by E = ( 3i – 4j ) N/ kg. Find out the work done ( in joule) in displacing a particle by 1 m along the line 4y = 3x +9. The gravitational field in a region is given by E = ( 3i - 4j [...]
Taking the earth to be a uniform sphere of radius 6400 km and the value of g at the surface to be 10 m/s^2 calculate the energy needed to raise a satellite of mass 2000 kg to a height of 800 km a above the earth’s surface and to set it into circular orbit at that altitude.
06
Oct
Taking the earth to be a uniform sphere of radius 6400 km and the value of g at the surface to be 10 m/s^2 calculate the energy needed to raise a satellite of mass 2000 kg to a height of 800 km a above the earth’s surface and to set it into circular orbit at [...]
The small dense stars rotate about their common centre of mass as a binary system, each with a period of 1 year. One star has mass double than that of the other, while mass of the lighter star is one-third the mass of the Sun. The distance between the two stars is r and the distance of the earth from the Sun is R, find the relation between r and R.
06
Oct
The small dense stars rotate about their common centre of mass as a binary system, each with a period of 1 year. One star has mass double than that of the other, while mass of the lighter star is one-third the mass of the Sun. The distance between the two stars is r and the [...]
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each with a period of 1 year. One star has mass double than that of the other ,
find the relation between r and R. ,
The small dense stars rotate about their common centre of mass as a binary system ,
while mass of the lighter star is one-third the mass of the Sun. The distance between the two stars is r and the distance of the earth from the Sun is R ,
A particle of mass 10 g is kept on the surface of a uniform sphere of masss 100 kg and radius 10cm. Find the work to be done against the gravitational force between them to take the particel far away from the sphere (you may take G=6.67× 10^−11 N/m2 k g^2)
06
Oct
A particle of mass 10 g is kept on the surface of a uniform sphere of masss 100 kg and radius 10cm. Find the work to be done against the gravitational force between them to take the particel far away from the sphere (you may take G=6.67× 10^−11 N/m2 k g^2) Find the percentage decrease [...]
The value of acceleration due to gravity at the surface of the earth is 9.8 m/s^2 and the mean radius is about 6.4×106m. Assuming that we could get more soil some where, estimate how thick would an added uniform outer layer on the earth have to have the value of acceleration due to gravity 10 m/s^2 exactly ?
06
Oct
The value of acceleration due to gravity at the surface of the earth is 9.8 m/s^2 and the mean radius is about 6.4×106m. Assuming that we could get more soil some where, estimate how thick would an added uniform outer layer on the earth have to have the value of acceleration due to gravity 10 [...]
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estimate how thick would an added uniform outer layer on the earth have to have the value of acceleration due to gravity 10 m/s^2 exactly ? ,
The value of acceleration due to gravity at the surface of the earth is 9.8 m/s^2 and the mean radius is about 6.4×106m. Assuming that we could get more soil some where ,
The radius of earth is about 6400 km and that of Mars is 3200 km. The mass of the earth is about 10 times the mass of Mars. An object weighs 200 N on the surface of Earth. Its weight on the surface of mars will be:
06
Oct
The radius of earth is about 6400 km and that of Mars is 3200 km. The mass of the earth is about 10 times the mass of Mars. An object weighs 200 N on the surface of Earth. Its weight on the surface of mars will be: Find the percentage decrease in weight of a [...]
Find the percentage decrease in weight of a body, when taken 16 km below the surface of the earth. Take radius of the earth as 6400 Km.
06
Oct
Find the percentage decrease in weight of a body, when taken 16 km below the surface of the earth. Take radius of the earth as 6400 Km. Find the percentage decrease in weight of a body when taken 16 km below the surface of the earth. Take radius of the earth as 6400 Km. October [...]
A body weighs 64 N on the surface of the earth. What is the gravitational force ( in N ) on it due to the earth at a height equal to one – third of the radius of the earth?
06
Oct
A body weighs 64 N on the surface of the earth. What is the gravitational force ( in N ) on it due to the earth at a height equal to one – third of the radius of the earth? A body weighs 64 N on the surface of the earth. What is the gravitational [...]
A ring of radius R = 4 m is made of a highly dense material. Mass of the ring is m1 = 5.4 × 10^9 kg distributed uniformly over its circumference. A highly dense particle of mass m2 = 6 × 10^8 kg is placed on the axis of the ring at a distance x0 = 3 m from the centre. Neglecting all other forces
06
Oct
A ring of radius R = 4 m is made of a highly dense material. Mass of the ring is m1 = 5.4 × 10^9 kg distributed uniformly over its circumference. A highly dense particle of mass m2 = 6 × 10^8 kg is placed on the axis of the ring at a distance x0 [...]
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A particle of mass m is subjected to an attractive central force of magnitude k/r 2 ,
at a distance a from the centre of force ,
if the distance of other extreme position is b. Find a/b ,
its speed is (k/2ma) ,
k being a constant. If at the instant when the particle is at an extreme position in its closed orbit ,
Suppose earth’s orbital motion around the sun is suddenly stooped. Find the time ( in days ) taken by the earth to fall into the sun.
06
Oct
Suppose earth’s orbital motion around the sun is suddenly stooped. Find the time ( in days ) taken by the earth to fall into the sun. Suppose earth's orbital motion around the sun is suddenly stooped. Find the time ( in days ) taken by the earth to fall into the sun. October 6, 2020 [...]