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CAPF - Gravitation Test 1418
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CAPF - Gravitation Test 1418

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  • Question 1/5
    1 / -0.33
    If the mass of the earth becomes twice and the radius half. Then the acceleration due to gravity will
    Solutions

  • Question 2/5
    1 / -0.33
    Which of the following is NOT correct regarding Geostationary satellites.

    Solutions

    Artificial satellite orbitals can be classified mainly in three categories based on their altitude

    (a). Low earth orbit LEO ( 1000 KM Altitude)

    (b). Medium earth orbit MEO (20,000 KM Altitude)

    (c). Geostationary or Geosynchronous orbit GEO (36.000 KM Altitude)

    Geostationary or Geosynchronous satellites revolve at the same time as that of earth, i.e the relative motion between Earth and the satellite is zero hence they are called geosynchronous or geostationary. This is why their orbit is also called the “Parking Orbit”.

  • Question 3/5
    1 / -0.33
    A lift goes down at the acceleration of 9.8 m/s. The mass of a person inside the lift will
    Solutions

    The mass of the person will remain the same, it does not depend on the acceleration due to gravity. The mass of a body will remain the same on earth and the moon.

    However, the weight of the body will change due to the acceleration. Here, this is the case of free fall hence the weight will become zero. Moreover, the weight of the same body will be different on earth and the moon.

  • Question 4/5
    1 / -0.33
    A geostationary satellite was seen by a boy on Monday midnight over Lucknow, what will be its position on other days
    Solutions
    Satellites are the one which revolves around a planet. There are two types of satellites, natural and man-made. Earth has a natural satellite called the moon and many artificial satellites. Again these artificial satellites are of two types polar and geosynchronous. A polar satellite revolves around the earth on a polar axis of the earth. A geostationary satellite is a that satellite which revolves around the earth in geosynchronous orbit that is it has a period of 24 hours, hence if placed over some point of earth, it seems to be at that place only since the earth takes 24 hours to rotate, the satellite will be pinned to that point only.
  • Question 5/5
    1 / -0.33
    Two body of equal masses M placed at diagonally opposite vertices of a cube with side A in space, the force of attraction will be
    Solutions

    Where F is the gravitational force of attraction

    M is the mass of a first body

    M is the mass of a second body

    is the distance between them i.e the distance of diagonals of a cube

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