'GRAVITY' BY FREE FALL APPARATUS

For determination of 'gravity' by free fall method. The apparatus consists of an electromagnet which is housed in a plastic moulded case. with 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 attached. As soon as the power to the electromagnet is switched off the sphere falls and the unit activated the timer. The sphere hits a platform which is connected to a micro switch which then stops the timer and the time of fall can be determined.