PASCO ME-9452A User Manual
®
Instruction Manual and
Experiment Guide
012-05024G
*012-05024*
2.2 m Classic Dynamics System
ME-9452A
2.2 m Classic Dynamics System Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
About the Experiments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Experiment 1: Conservation of Momentum in Explosions . . . . . . . . . . . . . . . . . . . . . . . 11
Experiment 2: Conservation of Momentum in Collisions . . . . . . . . . . . . . . . . . . . . . . . . 13
Experiment 3: Simple Harmonic Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Experiment 4: Oscillations on an Incline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Experiment 5: Springs in Series and Parallel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Experiment 6: Launch Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Experiment 7: Newton’s Second Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Experiment 8: Acceleration Down an Incline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Experiment 9: Conservation of Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Additional Experiment Suggestions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.2 m Classic Dynamics System
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ME-9452A
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Included Equipment Quantity Replacement Part Number
1. Plunger Cart 1 ME-9340
2. Collision Cart 1 ME-9454
3. 250 g Compact Cart Masses 2 ME-6755
4. 500 g Cart Mass 1 ME-6757
5. Adjustable End Stops 2 ME-8971 (2-pack)
6. 2.2 m Dyna mic s Track 1 ME-9779
7. Adjustable Feet 2 ME-8972 (2-pack)
8. Harmonic Springs 4 ME-9803 (3-pack)
9. Friction Block 1 ME-9807
10. Pivot Clamp 1 ME-9810
11. Super Pulley with Clamp 1 ME-9448A
12. Angle Indicator 1 ME-9495
13. Spring Cart Launcher with: ME-6843
a. Compression Springs 3
b. Release Pin 2
c. String 1 m
ME-6847 (6 springs, 4 release pins)
Introduction
The 2.2 m Classic Dynamics System includes every thing you need for a variety of experiments and demonstrations. You can also combine it with many other PASCO products—both traditional and computer-based—for an
even greater range of uses.
This manual contains descriptions of the included equipment, complete instructions for nine experiments, and
ten additional experiment suggestions.
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2.2 m Classic Dynamics System About the Equipment
Track Features
1: Grooves 2: Metric scale 3: T-slot
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Plunger Cart
1: Push plunger in.
2: Push up to lock.
3: Tap button to trigger.
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Cart Features
1: Slots 2: Tapped holes
3: Bumpers
Cart Masses
About the Equipment
Track The 2.2 m aluminum track has two groves to guide the
wheels of carts, a metric scale for measuring cart positions, and
T-slots on both sides for attaching end stops, leveling feet and
other accessories.
Tip: The track is designed to support the weight of carts and related
apparatus. Excess weight will warp it. When you store the track, ensure
that no heavy object will be placed on top of it.
Plunger Cart and Collision Cart These carts run along the track on low-friction wheels.
The plunger cart includes a spring-loaded plunger that launches the cart off of an end
stop or another cart. Push the plunger in to the first, second, or third “click” (for a
slow, medium, or fast launch); then push up to make the trigger catch. To make the
plunger pop out, tap the trigger button with a hard object (such the included 500 g
mass). When the plunger is not in use, push it all the way in to the third position.
For elastic and inelastic collisions, both carts have hook-and-loop bumpers on one
end and magnetic bumpers on the other end. When the hook-and-loop bumpers collide, the carts stick to each other. When the magnetic bumpers collide, the carts repel
each other without touching. The magnetic bumpers also repel the magnets in the end
stops.
The top or each cart forms a tray designed to hold the included masses. The carts also
feature tapped holes for attaching accessories and sensors, and slots for holding a
picket fence (such as PASCO part ME-9804) or the included angle indicator.
For more information, see the manuals packaged with both carts.
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Cart Masses These masses are designed to be placed on the upper tray of a cart.
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Model No. ME-9452 About the Equipment
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Adjustable Feet
1: Slide tab into T-slot. 2: Tighten thumbscrew to
secure feet set. 3: Turn feet screws to level track.
4: Tighten lock nuts to secure feet screws.
1/4 1/4
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Adjustable End Stop
1: Slide tab into T-slot on side of track. 2: Tighten
thumbscrew to secure end stop. 3: Magnets repel
cart’s magnetic bumper 4: Spring attachment stud
Harmonic Spring
Friction Block
Adjustable Feet Attach the feet to the track as illustrated.
Turn the feet screws to level the track then tighten the lock nuts
to secure them.
For maximum stability, position the feet about 1/4 of the track
length from each end
Adjustable End Stops Attach the end stops to the track
as illustrated. The end stops contain magnets to repel the magnetic bumper of a cart. A stud is provided as an attachment
point for a spring.
Harmonic Springs Ideal for studying harmonic oscillation
of carts on a flat or inclined track, these spring hook onto holes
at the ends of the carts and to studs on top of the end stops. The
springs are packed in storage tubes, which include adhesive
tape so that they may be permanently attached to the underside
of the track.
Friction Block The friction block has two different surfaces (wood and felt) and
two different surface areas for studying friction. It includes an eye screw for attaching
a string and slots on both broad surfaces for holding a picket fence (such as PASCO
part ME-9804) or the included angle indicator.
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2.2 m Classic Dynamics System About the Equipment
Pivot Clamp
T-slot
Angle Indicator on cart
Spring Cart Launcher
Pivot Clamp Attach the pivot clamp to the T-slot of the track (as illustrated) to ele-
vate one end of the track on a vertical rod.
Super Pulley with Clamp This low-friction, low-inertia pulley 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)
Angle Indicator Attach the angle indicator to the track as illustrated, or remove
the attachment screw and slip it into the slots of a cart or friction block. The hanging
thread indicates the angle or incline.
Angle Indicator on track
Spring Cart Launcher This accessory is designed for the
study of force and motion, potential energy, conservation of
energy, the work-energy theorem, Hooke’s Law, and spring
constants. Use it to launch either cart by compressing and
releasing one of three interchangeable springs. The included
release pin, in combination with two end stops, allows you to
use precisely the same spring compression for multiple
launches.
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For more information, see Experiment 9 on page 29 and the manual
packaged with with the launcher.
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Model No. ME-9452 Spare Parts
Spare Parts
You can order any of the major components of the system using the part numbers
listed in the table on page 5. 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.
Cart Launcher Springs Kit (ME-6847) This kit includes four compression
springs and four release pins for the Spring Cart Launcher.
For help identifying a part, contact PASCO technical support (see page 34).
About the Experiments
These nine experiments can be done with the equipment included in the system and
other equipment commonly found in introductory physics labs. See each experiment
for a specific equipment list.
1. Conservation of Momentum in Explosions (page 11): Demonstrate conserva-
tion of momentum when two carts push off from each other.
2. Conservation of Momentum in Collisions (page 13): Demonstrate conserva-
tion of momentum in elastic and inelastic collisions.
3. Simple Harmonic Oscillator (page 15): Study how the period of oscillation of a
system varies with its mass.
4. Oscillations on an Incline (page 18): Study the oscillation of a cart attached to a
spring on an inclined track.
5. Springs in Series and Parallel (page 21): Examine how springs combined in
different ways affect the period of oscillation of a cart.
6. Launch Speed (page 23): Show qualitatively how the final speed of the plunger
cart depends on its mass and the initial compression of the plunger spring.
7. Newton’s Second Law (page 24): Show quantitatively how the acceleration of a
cart is related its mass and net force.
8. Acceleration Down an Incline (page 26): Determine the strength of earth’s
gravity (g) by measuring the acceleration of a cart on an inclined track.
9. Conservation of Energy (page 29): Use the spring cart launcher to launch a cart
up an incline. Compare the potential energy initially stored in the spring to the
maximum gravitational potential energy achieved by the cart.
Additional Experiment Su ggestion s (page 32): Many of these suggestions are variations on the above experiments. Some require additional carts.
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2.2 m Classic Dynamics System About the Experiments
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