PASCO ME-6962 PAStrack Systems - Manual (Page 6)

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P A S t r a c k S y s t e m s S p a r e P a r t s
6
Harmonic Springs (Part of ME-6961.) Ideal for studying
harmonic oscillation of carts on a flat or inclined track, these
springs hook onto holes at the ends of the carts and to studs on
top of the end stops.
The spring set includes 12 springs with approximate spring
constants of 3.4 N/m (three long springs and three shorts
springs) and 6.8 N/m (three long springs and three shorts
springs).
Pivot Clamp (Part of ME-6961.) Attach the pivot clamp to the T-slot of the track
(as illustrated) to elevate one end of the track on a vertical rod.
Super Pulley with Clamp (Part of ME-6961.) This low-friction, low-inertia pul-
ley is designed for clamping onto the end of the track. Tie a string to the hole in the
end of the cart an run it over the pulley. Adjust the height of the pulley to make the
string parallel to the track.
The pulley can also be mounted in the lower position as illustrated. Tie the string to
the opposite end of the cart and wrap it underneath the cart. In the lower position, the
string can be run under an end stop, another cart, or a motion sensor.
Super Pulley with string in normal position (left) and lower position (right)
Spare Parts
You can order any of the major components of the system using the part numbers
listed in the table on page 3. For an assortment of smaller parts, the following kits are
available.
IDS Spares Kit (ME-9823) This kit includes assorted thumbscrews, square nuts,
and harmonic springs.
For help identifying a part, contact PASCO technical support (see page 28).
Harmonic Spring
Pivot Clamp
T-slot