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Gravitation Test - 67

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Gravitation Test - 67
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  • Question 1
    4 / -1
    Energy required to move a body of mass m from an orbit of radius 2R to 3R is
    Solution

  • Question 2
    4 / -1
    Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to
    Solution

  • Question 3
    4 / -1
    The escape velocity for a rocket from earth is 11.2 km/sec. Its value on a planet where acceleration due to gravity is double that on the earth and diameter of the planet is twice that of earth will be in km/sec
    Solution

  • Question 4
    4 / -1
    The escape velocity from the earth is about 11 km/second. The escape velocity from a planet having twice the radius and the same mean density as the earth, is
    Solution

  • Question 5
    4 / -1
    If g is the acceleration due to gravity at the earth\'s surface and r is the radius of the earth, the escape velocity for the body to escape out of earth\'s gravitational field is
  • Question 6
    4 / -1
    The escape velocity of a projectile from the earth is approximately
  • Question 7
    4 / -1
    Two small and heavy spheres, each of mass M, are placed a distance r apart on a horizontal surface. The gravitational potential at the mid-point on the line joining the centre of the spheres is
    Solution

  • Question 8
    4 / -1
    The escape velocity of a planet having mass 6 times and radius 2 times as that of earth is
    Solution

  • Question 9
    4 / -1
    The escape velocity of a body on the surface of the earth is 11.2 km/s. If the earth\'s mass increases to twice its present value and the radius of the earth becomes half, the escape velocity would become
    Solution

  • Question 10
    4 / -1
    Given mass of the moon is 1/81of the mass of the earthand corresponding radius is 1/4 of the earth. If escape velocity on the earth surface is 11.2 km/s, the value of same on the surface of the moon is
    Solution

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