PASCO ME-9838 Manuel utilisateur

Instruction Manual

No. 012-08990B

Hovercraft

ME-9838

Hovercraft Model No. ME-9838

2®

Model No. ME-9838 Hovercraft

Hovercraft

Model No. ME-9838

Equipment List

*Use Replacement Model Numbers to expedite replacement orders.

Included Equipment Replacement

Part Number*

Wood Platform (1.2 meter diameter, 1.9 cm thick) 648-08988

Nylon Skirt 648-08985

Rubber Bumper 622-08686

Liquid Level 699-010

Connection Hose for Air Source 640-048

Hose Clamps (2) 623-069

Additional Equipment Recommended

Cordless Air Source SE-8806

Xplorer GLX PS-2002

Force Platform (2) PS-2141

Related Products

Hovercraft Kit -- Includes everything needed to build the Hovercraft except

the wood platform. ME-9878

Hovercraft Model No. ME-9838

4®

Introduction

PASCO's Hovercraft is designed to help students experience frictionless motion, thus better

understand Newton's Laws. Its large platform provides enough area for the rider to

comfortably sit while riding. In addition, the durable Nylon skirt will withstand the rigors of

the classroom environment.

The optional Cordless Air Source (SE-8806) is a convenient way supply air to the Hovercraft,

however most vacuums/blowers used in a wood shop will also be sufficient to lift the

Hovercraft.

The Hovercraft is available in two varieties:

• Hovercraft (ME-9838) is assembled and ready to use

• Hovercraft Kit (ME-9878) requires the addition of the wood platform and needs to be

assembled according to the included instructions and drawings (See pages 8-9).

Equipment Setup and Basic Operation

1. Place the Hovercraft on a smooth, non-carpeted surface such as tile or wood flooring. An

unobstructed space of 10 meters in all directions is ideal.

2. Sit down in the center of the platform.

3. Connect the air source to the platform using the provided tubing or by inserting the blower

tube directly into the opening on the platform.

4. If using the tubing, a screwdriver is required to tighten the clamp around the blower output

tube.

5. Turn on the air source to inflate the Hovercraft skirt.

6. As the skirt inflates, the rider should center his/her weight using the level mounted on the

platform. If the rider is not centered, friction may be introduced.

7. Provide a brief push to the rider on the Hovercraft and observe the resulting motion.

NOTE: Never stand on the Hovercraft as it is very easy to lose your balance and fall.

Model No. ME-9838 Hovercraft

Suggested Activities

Newton's 1st Law

Additional Equipment Required:

• Air Source (SE-8806)

Procedure:

1. Ask several students to stand about 5 meters from the Hovercraft to observe its motion.

2. Another student should be designated as the "catcher" to stop the Hovercraft.

3. A final student should be designated as the "marker" to place tape of the floor during its

motion.

4. Provide a brief push to the rider.

5. Ask the "marker" to mark the position of the Hovercraft each second after the "pusher"

releases the rider.

6. After moving across the floor for about 10 seconds, stop the Hovercraft.

Questions:

1. Describe the motion both during and after the push.

2. Draw a force diagram for the rider both during and after the push.

3. Describe the spacing between the marks on the floor. What do these marks suggest about

the motion the Hovercraft?

4. Describe the motion as the Hovercraft is stopped and draw a force diagram while

stopping.

5. Describe the causes of the motion that you observed throughout the motion.

6. Formulate a general rule to explain the motions you observed.

Hovercraft Model No. ME-9838

6®

Newton's 2nd Law

Additional Equipment Required:

• Air Source (SE-8806)

• Section of Rope

Procedure:

1. Ask several students to stand about

5 meters from the Hovercraft to

observe its motion.

2. Another student should be

designated as the "catcher" to stop

the Hovercraft.

3. A final student should be

designated as the "marker" to place tape of the floor during its motion.

4. Using a rope, provide a constant force to the rider for about 3 seconds.

5. Ask the "marker" to mark the position of the Hovercraft each second.

6. After moving across the floor for about 5 seconds, stop the Hovercraft.

Questions:

1. Describe the motion both during and after the pull.

2. Draw a force diagram for the rider both during and after the pull.

3. Describe the spacing between the marks on the floor. What do these marks suggest about

the motion of the Hovercraft?

4. Describe the motion as the Hovercraft is stopped and draw a force diagram while

stopping.

5. Describe the causes of the motion that you observed throughout the motion.

6. Formulate a general rule to explain the motions you observed.

Model No. ME-9838 Hovercraft

Newton's 3rd Law

Additional Equipment Required:

• Air Source (SE-8806)

• Xplorer GLX (PS-2002)

• PASPORT Force Platform (2) (PS-2141)

Procedure:

1. Ask several students to stand about 5 meters from the Hovercraft to observe its motion.

2. Another student should be designated as the "catcher" to stop the Hovercraft.

3. The "pusher" should hold the Force Platform perpendicular to the ground.

4. The "rider" should place the other Force Platform up against the pusher's.

5. The pusher should provide a force to the rider for about 1 second.

6. After moving across the floor for about 5 seconds, stop the Hovercraft.

Questions:

1. Describe the motion both during and after the push.

2. Use the data from the Force Platforms to produce a graph with both the pusher's force and

the rider's force.

3. Draw a force diagram for the rider during the push.

4. Draw a force diagram for the pusher during the push.

5. Formulate a general rule about size and direction of forces between objects.

Hovercraft Model No. ME-9838

8®

Hovercraft Kit Assembly Instructions:

1. Buy or cut a 46" diameter wood platform with a thickness of ¾"

2. Drill 1 ½" hole for air source (see figure 1)

3. Drill two 9/64" holes for air source adapter (see figure 1)

4. Drill 17/64" center hole (see figure 1)

5. Paint wood platform (Optional)

6. Stretch the Rubber Bumper around the outside edge of the wood platform. You must force

a small section of the bumper onto the platform and work your way around the

circumference of the platform.

7. Secure the rubber bumper to the plywood with the provided staples.

8. Cut wire approximately 150" long and bend one end into a small loop.

9. Thread wire through skirt opening; loop end first.

10. Using the included hardware, attach the center of the skirt to the wood platform. (See

figure 2.)

11. Place the wood platform on a table with the bottom side up and drape the skirt around the

edge of the platform.

12. Feed each end of the wire into the gripple.

Figure 1. wood platform layout

Model No. ME-9838 Hovercraft

13. Pull the two ends taut until the skirt is held firmly in the groove of the rubber bumper.

Have another person walk around the bumper to be sure the skirt is in the groove as the

wires are pulled taut.To prevent leaks make sure the wires are cinched up very tight.

14. Trim the wires from each side of the gripple. Be sure the sharp wires do not stick out!

15. Using the included wood screws, attach the air source adapter to the top of the wood

platform (See Figure 4).

16. Use glue or double-sided tape to affix the bubble level to the top of the wood platform.

Place the level away from the center of the platform, so the rider can view the level easily

(See Figure 4)...

Figure 3. Gripple Detail

Flat Washer

Skirt

Rubber Washer

Flat Washer

Top of Wood Platform

Figure 4. Exploded View

Figure 2. Attach center of skirt

Skirt

Rubber Bumper

Wood Platform

Air Source Adapter

Bubble Level

Cap Nut

Flat Head Screw

Model No. ME-9838 Hovercraft

Safety

Read the instructions before using this

product. Students should be supervised

by their instructors. When using this

product, follow the instructions in this

manual and all local safety guidelines

that apply to you.

Technical Support

For assistance with any PASCO product,

contact PASCO at:

Address: PASCO scientific

10101 Foothills Blvd.

Roseville, CA 95747-7100

Phone: (916) 786-3800

(800) 772-8700

Fax: (916) 786-3292

Web: www.pasco.com

Email: [email protected]

Limited Warranty

For a description of the product warranty,

see the PASCO catalog.

The PASCO scientific 012-08990B

Hovercraft Manual is copyrighted with all

rights reserved. Permission is granted to

non-profit educational institutions for

reproduction of any part of this manual,

providing the reproductions are used only in

their laboratories and classrooms, and are not

sold for profit. Reproduction under any other

circumstances, without the written consent

of PASCO scientific, is prohibited.

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