PASCO ME-9893 Discover Free Fall Accessory - Manual (Page 2)

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D i s c o v e r F r e e F a l l S y s t e m In t r o d u c ti o n
2
Figure 1: Drop box mounted on a rod stand
Introduction
The PASCO Discover Free Fall System consists of the ME-6839 Drop Box plus the
ME-9893 Discover Free Fall Accessory. The Discover Free Fall Accessory consists
of the Free Fall Ball Accessory (ME-9890), the Timer Switch (ME-9819) and the
Time-of-Flight Accessory (ME-6810).
The PASCO Discover Free Fall System allows students to precisely time falling
objects. The system includes several balls of various sizes and masses (ranging from
about 6 g to 70 g). Other objects of similar mass can also be used.
The object to be dropped is suspended from a magnet. When the timer switch is
pushed, the object is released and the timing starts. Timing stops when the object hits
the time-of-flight pad. The system includes steel washers and adhesive stickers to
allow non-steel objects to be suspended from the magnet.
The timer switch is a push-button device that simultaneously causes the drop box to
release the object and triggers the timing device to start timing.
The time-of-flight accessory is a pad that triggers the timing device to stop timing
when an object hits it.
Drop Box
Time-of-Flight Accessory
Clamp higher
on rod for
increased fall
height