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Weightlessness in Satellite Orbiting Earth

Discover the concept of weightlessness in a satellite's orbit around the Earth, exploring the role of velocity, acceleration, gravity, and centripetal force. Uncover the perception of weightlessness and the similarity to free-falling experiences in elevators.

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Weightlessness in Satellite Orbiting Earth

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  1. Weightlessness

  2. The velocity of a satellite keeps it in orbit • Even when moving, the satellite is actually accelerating toward the Earth (this is what keeps it in its circular path) • Its acceleration results in a curved path which is the same as the curve of the Earth • Gravity is providing the centripetal force

  3. Perception of Weightlessness • There is still gravity acting in a satellite (about 8.9 m/s2), so why do we feel weightless? • In an free falling elevator, if the FA is equal to the FG, there is no FN • No force is felt feel weightless – called apparent weightlessness

  4. Weightlessness that you feel in a satellite is like the weightlessness in an elevator • The satellite and everything on it are all accelerating toward the earth at the same rate

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