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Concepts Of Physics MCQ Edition [Volume 1]PhysicsThe Forces

A geostationary satellite orbits at a distance of approximately 36000 km from the surface of the earth. Determine the weight of a 120 kg equipment placed inside this satellite. The radius of the earth is 6400 km .

Options

  1. A27 N
  2. B0 N
  3. C37 N
  4. D1176 N

Correct answer

B. 0 N

Step-by-step solution

The weight of an object placed inside a satellite is its apparent weight, which is the normal reaction force exerted by the surface of the satellite on the object. In an orbiting satellite, both the satellite and the equipment inside it are in a state of free fall towards the Earth. The centripetal acceleration of the satellite and the equipment is provided entirely by the Earth's gravitational pull. Let g' be the acceleration due to gravity at the orbit. The equation of motion for the equipment is mg' - N = ma_c .

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