Apparatus The under-mentioned method is described based on the commerc
experiment. The kit usually contains the following pieces of appar
e available:
At least two trolleys and a trolley track
Pulley, cotton thread and hook
A set of similar, small mass pieces, usually in the form of
At least one large mass piece, with more or less the sam
Ticker-tape
Ticker-timer, usually DC
Battery holder (a DC power source may also be used if
Ticker
Trolley track
Trollov​