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Size: 4040
Comment:
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Size: 2602
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 26: | Line 26: |
| N/A | 1. This demonstration requires practice |
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| 1. Set up the bridge, the hose and the lead bricks in such a way that the cart does not roll off the table. Make sure the open side of the bridge is the right distance from the edge of the table so that the trigger string can be released right before the ball goes under the bridge. | 1. Set up the bridge, the hose and the lead bricks in such a way that the cart does not roll off the table after it goes under the bridge. Make sure the open side of the bridge is the right distance from the edge of the table so that the trigger string is released right before the ball goes under the bridge. |
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| 3. Load the ball into the launcher by pressing it down and placing the spring in the whole. 4. Roll the cart under the bridge. It should be going relatively fast. |
3. Load the ball into the launcher by pressing it down and placing the pin in the whole. |
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| 1. The lead blocks weight about 32lbs. Take care no to drop them or strain yourself. 1. Don't let the cart fall off of the lab bench, it is heavy. |
1. The lead blocks weigh about 32lbs. Take care no to drop them or strain yourself. 1. Don't let the cart fall off of the lab bench; it is heavy. |
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| Give the cart a good push. It takes practice to get the right speed so that the ball is in the air when the cart is under the bridge. After you push it, the cart rolls at constant velocity. It launches the ball, goes under the bridge, and catches the ball. The ball goes over the bridge and the cart goes under. Because both the ball and the cart have constant velocity in the horizontal direction the ball will fall back into the launcher. Horizontal and vertical motion are independent. | |
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| The cart rolls at constant velocity. It launches the ball, goes under the bride, and catches the ball. Because both the ball and the cart have constant velocity in the horizontal direction the ball will fall back into the launcher. Horizontal and vertical motion are independent. attachment:BallisticsCarADemo.mpg |
See a video of this demonstration being preformed: attachment:BallisticsCarADemo.mpeg. |
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| Use the Tall cart for a better show. Push ball down in the cart and insert the retaining pin in the bottom whole of the tall ballistic cart. The retaining pin is attached to a string with is tide to a C-clamp and clamped to the bench. The bridge is placed about one string length in front of the cart when the retaining pin string is taunt. Lineup the cart with the bridge so that when you give the cart a good push the retaining pin is pulled out by the string which is C-clamped to the bench. Thus releasing the ball that was in the cart. The cart should roll under the bridge and the ball should go over the bridge. The ball should land back inside the cart on the other side of the bridge. Use either an air hoses or a board and eraser as bumpers to prevent cart from falling of the bench. PROCEDURE: SETUP: Take the C-clamp with the release pin tied to it and clamp it to the side of the bench. Load the cannon by placing the steel ball in the cannon and push the ball down as far as you can. Then insert the release pin in to the small whole in the side of the cannon. The taller cart has two wholes, use the lower one. Roll the loaded cart out as far as the string will let you without releasing the pin. This gives you a distance guide, lets call it "L", to put the bridge. Place the bridge at a distance of 3/2L from the C-clamp, But no farther then 2L. Make sure the cart can go under the bridge without hitting the top of the bridge. Also make sure there is something to stop the cart on the other side of the bridge so that the cart does not fly off the bench. Use something like an air hose or 2 bar erasers and lead bricks. 1. List any references |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
CENCO Ballistic Cart with Launcher, 1D60.10a
Location:
Cabinet: [:MechanicsCabinet:Mechanic (ME)]
Bay: [:MechanicsCabinetBayA5:(A5)]
Shelf: #6
attachment:BallisticsCarA-05-400.jpg
Description:
The SENCO ballistic cart is equipped with a spring loaded vertical ball launcher. The launcher is fired when the pin is pulled out by a string.
Equipment |
Location |
ID Number |
|
|
|
Cenco Ballistic Cart Launcher |
[:MechanicsCabinetBayA5:ME Cabinet, Bay A5], Shelf #6 |
1D60.10a |
Corrugated Vacuum Hose |
Stock cabinet by elevator |
|
Wooden Bridge |
[:MechanicsCabinetBayA5:ME Cabinet, Bay A5], Shelf #5 |
|
Lead Blocks |
Rod and Tack Cabinet |
|
Important Setup Notes:
- This demonstration requires practice
Setup:
- Set up the bridge, the hose and the lead bricks in such a way that the cart does not roll off the table after it goes under the bridge. Make sure the open side of the bridge is the right distance from the edge of the table so that the trigger string is released right before the ball goes under the bridge.
- Clamp the string to the lab bench.
- Load the ball into the launcher by pressing it down and placing the pin in the whole.
Cautions, Warnings, or Safety Concerns:
- The lead blocks weigh about 32lbs. Take care no to drop them or strain yourself.
- Don't let the cart fall off of the lab bench; it is heavy.
Demonstration: Give the cart a good push. It takes practice to get the right speed so that the ball is in the air when the cart is under the bridge. After you push it, the cart rolls at constant velocity. It launches the ball, goes under the bridge, and catches the ball. The ball goes over the bridge and the cart goes under. Because both the ball and the cart have constant velocity in the horizontal direction the ball will fall back into the launcher. Horizontal and vertical motion are independent.
See a video of this demonstration being preformed: attachment:BallisticsCarADemo.mpeg.
attachment:BallisticsCarA-01-250.jpg |
attachment:BallisticsCarA-02-250.jpg |
attachment:BallisticsCarA-03-250.jpg |
attachment:BallisticsCarA-04-250.jpg |
References:
[:Instructional:Home]