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PASCO ME-9430 Instruction Manual

Plunger cart
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3.
2.
Features
1
Low-friction Retractable Ball-Bearing Wheels
2
ABS End Caps
3
Magnets in non-plunger end cap (not shown)
Upper Tie Point (each end cap)
4
Slot for Cart Picket Fence (ME-9804)
5
Accessories
Please see the PASCO catalog or the PASCO web site at
www.pasco.com
for information about accessories such as tracks, springs,
bumpers, pulleys, masses, and special attachments that
are designed to be used with the Plunger Cart.
800-772-8700
Plunger Cart
4.
5.
1.
ME-9430
6.
7.
6
Two Mounting Holes
7
Accessory Tray
8
Plunger Trigger
9
Hook and Loop (Velcro®) Tabs
10
Lower Tie Point (each end cap)
Introduction
The Plunger Cart is a 500 gram cart with an aluminum body
and ABS (acrylonitrile butadiene styrene) end caps. It has a
spring plunger in one end and magnets in the other. It has
"hook-and-loop" (Velcro®) tabs on the plunger end for
inelastic collision studies. The magnets can be used for
elastic collisions studies. The spring plunger has three set -
ting positions and is released by a plunger trigger on the
top of the plunger end of the Plunger Cart. Both ends of the
Plunger Cart have convenient tie points at the top and the
bottom. On the top of the Plunger Cart is an accessory tray
Instruction Manual
8.
4.
10.
9.
012-14781A
9.
www.pasco.com

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Summary of Contents for PASCO ME-9430

  • Page 1 Lower Tie Point (each end cap) Accessories Introduction Please see the PASCO catalog or the PASCO web site at The Plunger Cart is a 500 gram cart with an aluminum body and ABS (acrylonitrile butadiene styrene) end caps. It has a www.pasco.com...
  • Page 2 Plunger Operation Plunger Trigger The following illustrations show a few of the ways that the Plunger Cart is used. See the PASCO web site at www.pasco.com for more information. Collision Cart The PASCO ME-9454 Collision Cart is a “twin” of the...
  • Page 3: Technical Support

    SE-8827 Force Sensor Bracket 30 Meter Measuring Tape SE-8712A For information about the suggested equipment and other items for use with the Plunger Cart, see the PASCO cata - log or the PASCO web site at www.pasco.com Technical Support Force...
  • Page 4 PASCO scientific, is prohibited. Trademarks PASCO and PASCO scientific are trademarks or registered trademarks of PASCO scientific, in the United States and/or in other countries. All other brands, products, or service names are or may be trademarks or service marks of, and are used to identify, products or services of, their respective owners.
  • Page 5 Experiments Plunger Cart Experment 1: Kinematics (Average vs. Instantaneous Velocities) Equipment Needed Plunger Cart Metric Tape Measure Figure 1.1 Stopwatch Purpose In this lab, the Plunger Cart will be used to investigate one dimensional accelerated motion. The Plunger Cart will be launched over the floor using the built-in spring plunger. The Plunger Cart will “decelerate”...
  • Page 6 Plunger Cart Experiments Procedure 1. Once you have roughly determined the range of the Plunger Cart, clearly mark a distance d that is about half way out from the start. Measure this distance and record it at the top of Table 1.1. 2.
  • Page 7 Experiments Plunger Cart Experiment 2: Coefficient of Friction Equipment Needed Plunger Cart Metric Tape Measure Stopwatch Purpose In this lab, the Plunger Cart will be launched over the floor using the on-board spring launcher. The cart will “decelerate” over the floor under the combined action of rolling friction and the average floor slope.
  • Page 8 Plunger Cart Experiments Procedure 1. Place the Plunger Cart in its starting position and then launch it. To cock the spring plunger, push the plunger in, and then push the plunger slight upward to allow one of the notches on the plunger bar to “catch”...
  • Page 9 Experiments Plunger Cart Experiment 3: Newton’s Second Law (Predicting Accelerations) Equipment Needed Plunger Cart Pulley and Pulley Clamp Mass Set Balance Stopwatch String Paper clips Block (to act as bumper) Bumper Block Paper clips Figure 3.1 Purpose In this lab, a small mass m will be connected to the cart by a string as shown in Figure 3.1. The string will pass over a pulley at the table’s edge so that as the mass falls the cart will be accelerated over the table’s surface.
  • Page 10: Data Analysis

    Plunger Cart Experiments   (Theoretical. Value)         total total Procedure 1. Set up the pulley, cart, and a bumper of some sort to prevent the cart from hitting the pulley at the end of its run.
  • Page 11 Experiments Plunger Cart Table 3.1 Average (cm/s (cm/s Trial m (g) % Diff. time (s) Question 1. Can you think of any systematic errors that would effect your results? Explain how each would skew your results. 012-14781A...
  • Page 12 Plunger Cart Experiments NOTES 012-14781A...
  • Page 13 Experiments Plunger Cart Experiment 4: Cart Calibration (Measuring the Spring Constant) Equipment Needed Plunger Cart Stopwatch Mass Set Balance Pan for holding masses Metric Ruler Metric Measuring Tape Purpose The Plunger Cart has a spring plunger, which can be used for producing relatively elastic collisions and providing a reproducible launch velocity.
  • Page 14 Plunger Cart Experiments 1/2 total added mass Total added mass Note the final position of the plunger Pan for holding masses Note the new position Note the initial position of the plunger of the plunger 15 cm ruler attached to the Plunger Cart Figure 4.1 Procedure 1.
  • Page 15 Experiments Plunger Cart Data and Analysis mass of cart = ________________ kg k = ________________ N/m = _______________ m Predicted value of launch velocity v = _______________ m/s Average d = ____________________m Average t = ________________ s Observed value of the launch velocity v = _________________ m/s Percent difference (% Diff) between observed and expected values of v = _________...
  • Page 16 Plunger Cart Experiments NOTES 012-14781A...
  • Page 17 (see page 20 for details). The position of SS2 can be found experimentally using the PASCO Force Sensor or, roughly, by actually hitting a ball at a variety of positions on the bat and noting where the least shock to your wrists occurs. In this experiment, a method for determining the location of SS1 is described.
  • Page 18 Plunger Cart Experiments Eqn. 2   Procedure 1. Set up the system as shown in Figure 5.1. Position the cart so that its plunger hangs over the edge of the table several centimeters. NOTE: You will need a long, horizontal table, or board for this experiment. A 3/4 inch by 1 foot by 8 foot plywood board is recommended.
  • Page 19 Experiments Plunger Cart "Sweet Spot" Computer Program The following is a listing of the "Sweet Spot" computer program written by Scott K. Perry of American River College, Sacrament, CA, using Quickbasic 4.5. PRINT “Y-Impact (m)”; TAB(16); “Cart-Speed REM Program: SWEET SPOTS and PER- (m/s)”;...
  • Page 20 Plunger Cart Experiments NOTES 012-14781A...
  • Page 21 Experiments Plunger Cart Experiment 6: Sliding Friction and Conservation of Energy Equipment Needed Plunger Cart Stopwatch Metric Measuring Tape Brick or Block Long Board (ramp) Friction Block Protractor Purpose In this lab, the Plunger Cart will be launched down a ramp, as shown in Figure 6.1, while riding on a friction block.
  • Page 22 Plunger Cart Experiments If the acceleration is uniform, Eqn. 2 equals Eqn. 3. You can use the measured values of the angle ø (the angle of uniform acceleration), the distance d, and the time t to calculate the kinetic coefficient of friction µ...
  • Page 23 Experiments Plunger Cart values and enter it below Table 6.2. Data and Analysis ø = _________ Spring constant, k = _________ (from Experiment 4) Table 6.1 Trial t (sec) d (cm) a (cm/s average acceleration = _______________ cm/s coefficient of sliding friction = ______________ ...
  • Page 24 Plunger Cart Experiments NOTES 012-14781A...