MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and...
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Transcript of MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and...
![Page 1: MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and build a mousetrap-powered vehicle that moves at least.](https://reader033.fdocuments.us/reader033/viewer/2022061609/5519dea455034673298b4607/html5/thumbnails/1.jpg)
MPV project
![Page 2: MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and build a mousetrap-powered vehicle that moves at least.](https://reader033.fdocuments.us/reader033/viewer/2022061609/5519dea455034673298b4607/html5/thumbnails/2.jpg)
WHY BUILD AN MPV?
![Page 3: MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and build a mousetrap-powered vehicle that moves at least.](https://reader033.fdocuments.us/reader033/viewer/2022061609/5519dea455034673298b4607/html5/thumbnails/3.jpg)
Goals of the MPV project
1. To follow directions successfully and build a mousetrap-powered vehicle that moves at least 5 meters under its own power
2. To make connections between the construction and operation of the MPV with topics covered in class
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INSTRUCTIONS ON HOW TO BUILD A CAR
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Construction/Operation Phase
Requirements:• Each student must build a car powered by a
rubber-band and a mousetrap that achieves a displacement of 5 meters on 2 separate runs.
• Although advice and materials may be sought from anywhere, each car should be built by only one student.
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Grade Rubric for Construction Phase
50 points will be awarded for creation of an MPV that travels a displacement of 5 meters twice, under supervision
42 points will be awarded to the creators of an MPV that can only travel 5 meters once
38 points will be awarded to the creators of the car that can travel at least 3 inches under its own power.
0 points awarded if no car was never completed or run in front of the teacher, within the given time
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Extra Credit
• 2 more points if the car moves past 20m, 68 blocks• 4 more points if the car moves past 30m, 102 blocks• 8 more points if the car moves past 50 m, 170 blocks• 16 more points if it moves past 100 m, 340 blocks
For the run to count, it must be observed by the teacher or an assigned watcher
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Operation Phase• Each Student has to run their car at least 5 times AND
record the displacement AND time for each run.
• Calculate what is needed to complete chart
• Only one or two practice runs before students start recording data for their car.
• The 2 runs over 5 meters and any run that is worth bonus points must be included on the data sheet, so extend the chart onto other side if needed
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Chart grade
• The completed chart will be included in the first homework grade
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What jobs do the pieces perform?
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Timing device
• Stopwatch (I only have a limited number that work)
• Stopwatch on phone
![Page 12: MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and build a mousetrap-powered vehicle that moves at least.](https://reader033.fdocuments.us/reader033/viewer/2022061609/5519dea455034673298b4607/html5/thumbnails/12.jpg)
Mousetrap
• Used as body of basic car
• Major power-source.?
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String or Rubber-bands …
• Connects body to axles
• The attachment and wrapping of the string/rubber-band around axle determines how length the car moves
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Eye-screws
• Eye-screws are the best and easiest way to connect the axles to the body of the car
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Pencils and dowel rods
• These are used to make the axles of the car
• Connects the wheels together
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CD’s
• Serve as wheels for the car
• 2-3 wheels stuck together make better wheels
• Coffee lids, plastic plates, records, and pizza pans have all been used
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Connectors
• Cardboard, washers, spools
• Used to make a stable connection between the wheel to the axle
• Spools work the best, but the others are good
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Options
• Piece of wood
• Allows the eye screws to be screwed in rather glued and taped
• Allows use of bigger wheels
• Weight issues
• 6 inch Ruler
• Extends the mousetrap arm
• Makes car go father, but slower
![Page 19: MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and build a mousetrap-powered vehicle that moves at least.](https://reader033.fdocuments.us/reader033/viewer/2022061609/5519dea455034673298b4607/html5/thumbnails/19.jpg)
Steps to assemble an MPV
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Prepare the mousetrap to be the body of the car
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Glue, tape eye-screws to body
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Check fit and alignment of eyescrews
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What was done wrong?
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Make 2 fatter (power) wheels wheels
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Connect wheel to spool
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Connect one spooled wheel to axle
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Use washers as connections
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Use cardboard as connection
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Slide axle through 2 eye-screws
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Connect second wheel to axle
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Repeat last steps for the other axle
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Last steps
• Cut rubber band at one place
• Tie one end onto the top of mousetrap arm
• Lay the rubber band along the body of the car
• If loose edge of rubber-band extends beyond other axle, cut off excess
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How to make a MPV car move
• Wrap string/rubber-band over it self on back axle
• The axle will unwind in the opposite direction it is wound
• Wind the rubber-band tight before you lift your mousetrap arm
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Do NOT give the car
an added push!
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Chart to be completed when running cars
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Name: ___________
Class Period: ______
Displacement Measured in number of blocks
Displacement calculated in centimeters
Displacementcalculated in meters
TimeMeasured in seconds
Average VelocityMeasured in meters/second
1
2
3
4
5
![Page 37: MPV project. WHY BUILD AN MPV? Goals of the MPV project 1.To follow directions successfully and build a mousetrap-powered vehicle that moves at least.](https://reader033.fdocuments.us/reader033/viewer/2022061609/5519dea455034673298b4607/html5/thumbnails/37.jpg)
Relationship between blocks and metric units
• Each block is about 29.5 cm long
• 100 cm = 1 meter