Find the percentage decrease in weight of a body
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 [...]
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 [...]
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 [...]
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 [...]
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 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 [...]