MMW-PMCH-0021

This apparatus is used to determine G by measuring the time of fall of a steel ball through a pre-determined distance.

The time taken being less than one second, a centi second / millisecond
timer capable of measuring the time in fraction of seconds has to be
used.





Comprises two units each of which is mounted on a

plastic which can be clamped on a 12 mm diameter retort rod. Connections are taken out to 4 mm sockets. The solenoid unit has a metal core which facilitates

prompt release of the sphere on de-energizing.





The gate switch comprises a hinged steel plate to hold against an adjustable contact by

means of a small permanent magnet, the plate falls away promptly at the impact of falling steel ball. The apparatus is supplied with a solenoid unit, gate

switch, Steel Ball 18 mm dia and a stand.