‘G’ BY FREE FALL APPARATUS

  • It is used for the determination of acceleration due to gravity by the free fall method.
  • This apparatus is very easy to set up and use but nevertheless highly accurate.
  • The apparatus consists of 2 steel spheres and an electromagnet which is housed in a plastic moulded case.
  • There are socket connections provided to energize the magnet and another pair of sockets for connection to the timers.
  • In use, the electromagnet is energized and a metal sphere is held in the start position by the same.
  • As soon as the power to the electromagnet is switched off, the sphere is released, thus triggering the beginning of the timing measurement.
  • When the sphere strikes the contact plate at the bottom, the timer is stopped. The sphere is also held firmly on the plate so that it does not bounce.
  • The height through which the sphere drops can be read off a scale on the column.
  • With the digital timer, one can measure the time taken for the sphere to fall from its start position to the contact plate.
  • Thus, with these values, the acceleration due to gravity, ’g’ can be determined accurately.
  • The digital timer is included in the set.
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