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rainstorming

A dog door is a typical example of an application

which uses both a lever and gravity. It is a small

portal, where a hinge attaches with a flexible flap.

When a dog door is installed on a door, the flexible

flap is closed by its own gravity. When a dog wants to enter

or exist the house, he doesn’t need to wait for his owner to open

the door for him. He can use his head to push the flap. With this

motion, the hinge on the top of the flap becomes the pivot point, activating the

lever motion needed to lift up the flap. Therefore, the dog can go enter and exit

through it. After the dog passes through, the flap closes from its own gravity.

With the application of levers, and the gravity of the dog door, this flap can be

both opened and closed.

Give an example of something in daily life that uses
the same principles as a “dog door”.

Daily

Application

Daily

Application

In the past, in order to prevent an external invasion, people dug deep channels

around castles, and then guided water into the channel. This channel became

a moat. In order to make it convenient to travel in and out of the castle, a

suspension bridge would be built outside of the gate. The bridge itself also

serves as a preventive measure. Its pivot is built on the border of the gate and

the bridge.

To travel in and out of the gate, one only needs to lower the bridge down on the

moat by using its gravity. It then became a passageway, allowing people to enter

and exit the castle. If there were enemies coming, the bridge could be pulled

up by string with a lever to move the bridge

against its own gravity. The bridge would be

pulled up and the gate would be closed.

The bridge at the gate applies both a lever

action and its own gravity to open and close.

Kids, can you simulate the design of the city

walls?

Going Through

the Wall

Scientific

Application

Lever and Gravity

Содержание 1249R

Страница 1: ...1249R 269 PCS...

Страница 2: ...oth individual development and the ability to work as part of a team effort Course levels are designed from elementary to difficult combining a life sciences based curriculum with applications from da...

Страница 3: ...k 17 Going Through the Wall 16 High Speed Track 15 GreenMech 3 14 Ski Jump Ramp 13 Bifurcated Track 12 Spiral Roller 9 Pinball 4 Rising Dominos 5 Green Mech 1 6 Springboard 3 U Shaped Track 2 Rotating...

Страница 4: ...23 x2 24 x2 25 x3 26 x2 19 x4 20 x2 21 x4 31 x2 27 x1 22 x2 30 x3 35 x4 34 x1 18 x4 17 x4 6 x5 4 x5 5 x2 7 x4 8 x8 10 x4 11 x5 9 x5 12 x4 13 x10 14 x10 15 x2 36 x10 37 x1 38 x5 28 x5 29 x15 32 x1 33 x...

Страница 5: ...5 HOLE DUAL ROD 4 11 C 11 HOLE ROD 5 12 C 15 HOLE DUAL ROD 4 13 C 5X5 FRAME 10 14 C 5X10 FRAME 10 15 C 5x13 DUAL FRAME 2 16 C 5X15 FRAME 10 17 C JUMBO BASE GRID CONNECTOR 4 18 C JUMBO BASE GRID REMOV...

Страница 6: ...ertically aligned thus forming a right angle between the building s base and its center of gravity This way the building doesn t produce torque If you were to build a skyscraper like the Leaning Tower...

Страница 7: ...6 5 6 4 1 3 2 Parts List x8 1 2 x2 9 x1 12 x5 13 x2 14 x10 15 x1 28 x4 39 x4 43 x4 35 x1 2 2...

Страница 8: ...7 7 9 8 1 1 Skyscraper Done...

Страница 9: ...8 Hands on Experiment Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try and see how high you can build the skyscraper Try to use the incline rail to build a sturdy...

Страница 10: ...of motion is still applicable There is no inertia in the inertia reference system and inertia is only necessary in non intertial reference systems such as the rotation reference system or Newton s la...

Страница 11: ...10 1 5 2 6 4 3 Parts List 12 x1 28 x1 39 x6 43 x10 35 x2 3 x1 27 x1 22 x1 2...

Страница 12: ...11 Model Operation Video 7 2 Rotating Tower Done...

Страница 13: ...ent Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try changing the rubber wheel to objects of different weights and observe how they swing Try and design different...

Страница 14: ...en any rides that utilize U shaped tracks Daily Application Daily Application At some amusement parks there is a large U shaped ride that travels at a very fast speed The ride operates on the principl...

Страница 15: ...14 3 2 4 1 Parts List 36 x8 41 x2 40 x4 39 x6 43 x6 35 x1 2...

Страница 16: ...15 5 3 6 U Shaped Track Model Operation Video Done...

Страница 17: ...led Experiment Complete Model Creation Try using balls of different sizes or weights and observe the differences of the ball s height when it launches from the track Try adjusting the track to make th...

Страница 18: ...transfer energy upwards Daily Application Daily Application After dinner Grandpa Rudolph told Tony that he wanted to show him a new domino game that he had never played before Curious Tony asked what...

Страница 19: ...18 1 5 3 2 6 4 Parts List 2 x14 16 x2 17 x2 13 x5 14 x8 15 x1 36 x3 39 x2 41 x1 43 x2 35 x2...

Страница 20: ...19 Model Operation Video 7 9 8 4 Rising Dominos Done...

Страница 21: ...Experiment Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try moving the ball onto the track by crashing two blocks together Try designing the route of energy transf...

Страница 22: ...1 Skyscraper 3 U Shaped Track 2 Rotating Tower 4 Rising Dominos Green Mech 1 Please use the models and principles you ve learned and link two or more machines together to move the ball from a low plac...

Страница 23: ...Winner 22 Design Concept My Artwork 2 1 3 Model Design Model Creation Winner Evaluation...

Страница 24: ...available Daily Application Daily Application A teacher introduced the lever principle during class The teacher said that the motion of bending over to pick up things was one application of the lever...

Страница 25: ...24 1 5 3 2 4 Parts List 150mm 26 x1 22 x2 x4 1 2 x8 16 x3 19 x2 4 x2 11 x1 12 x2 13 x2 39 x3 41 x1 43 x4 35 x1...

Страница 26: ...25 6 7 6 Springboard Caution This is able to discharge objects other than the rubber band provided with the toy Do not use with any other objects There is a risk of injury Model Operation Video Done...

Страница 27: ...ment Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try and adjust the distance of the fulcrum so that the rubber wheel can bounce the ball higher Try and land the b...

Страница 28: ...n hitting game we sometimes see at a carnival The game is set up by placing a big tube on two wooden boards at different heights This makes an inclined surface for water balloons to slide down At the...

Страница 29: ...28 1 5 3 2 6 4 Parts List 2 x5 16 x4 24 x1 31 x1 30 x1 17 x2 13 x6 15 x1 36 x8 38 x4 29 x4 35 x2 Back view 4...

Страница 30: ...29 7 9 8 10 7 70m m Pitching Machine Model Operation Video Done...

Страница 31: ...Experiment Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try to adjust the angle of the slope to slow the speed of the falling ball Try designing different types of...

Страница 32: ...sed on the simple pendulum theory This is an experiment designed to test the capability of a car s gasoline tank to handle being hit by sharp objects The simple pendulum impact machine is mounted onto...

Страница 33: ...32 70mm Parts List 28 x5 39 x7 43 x6 35 x1 5 3 7 2 6 x2 1 16 x2 24 x1 11 x1 12 x4 13 x1 4 x1 9 x1 4 1 6 2...

Страница 34: ...33 8 8 Pendulum Pitching Machine Model Operation Video Done...

Страница 35: ...Creativity Evaluation Model Assembled Experiment Complete Model Creation Try placing objects of varying weight into the ball and observe the difference in how far the ball is hit Try building differen...

Страница 36: ...ndom allocation Daily Application Daily Application This is an experimental instrument which looks like a pinball at first glance On the top of the device there is a funnel shaped container that conta...

Страница 37: ...36 Parts List 16 x2 30 x1 17 x2 7 x3 8 x2 13 x2 15 x1 29 x13 36 x8 37 x1 38 x5 39 x5 41 x5 43 x1 35 x2 40 x4 1 9 7 2 8 4 3 5 6 5 2 2...

Страница 38: ...37 9 11 12 10 Pinball Model Operation Video Done...

Страница 39: ...Experiment Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try shooting 3 balls in order and observe if they fall in the same places Try making the 3 balls land in t...

Страница 40: ...ndulum Pitching Machine 10 6 Springboard 7 Pitching Machine 9 Pinball GreenMech 2 Please use the models and principles you ve learned and link two or more machines together to collect the balls and sh...

Страница 41: ...Winner 40 Design Concept My Artwork 2 1 3 Model Design Model Creation Winner Evaluation...

Страница 42: ...y sort out different coins from one another How do you shoot a bunch of balls to the next level within a limited time Daily Application Daily Application In 17th century Britain a person designed a pe...

Страница 43: ...42 Parts List x7 1 2 x5 6 x1 5 x2 10 x1 11 x2 9 x4 12 x4 13 x2 14 x2 23 x1 24 x1 25 x2 21 x3 15 x1 36 x4 35 x2 100mm 1 5 3 2 6 4...

Страница 44: ...43 11 7 8 100mm Gravity Pick Machine Model Operation Video Done...

Страница 45: ...ds on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try putting 3 balls in and have them roll out one by one in order Try changing the design of the model to control the num...

Страница 46: ...noticed that all the lottery machines were transparent This way people could see through the machine and remove any doubt of cheating Tony curiously noted how the numbers that the lottery machine chos...

Страница 47: ...46 Parts List 42 x4 43 x9 17 x4 36 x8 37 x1 39 x7 41 x6 35 x4 40 x6 5 3 2 6 1 44 x3 2 4 3...

Страница 48: ...47 12 9 10 7 8 Spiral Roller 3...

Страница 49: ...48 11 12...

Страница 50: ...49 12 13 Spiral Roller Model Operation Video Done...

Страница 51: ...Model Assembled Experiment Complete Model Creation Try placing objects of different weight in the ball and observe the types of conditions that cause the ball to roll off the track Try simultaneously...

Страница 52: ...ove on to the next stage where they activate other parts of the vending machine As for non qualified coins they can t make the weighing scale function therefore they return to the repayment port throu...

Страница 53: ...52 Parts List x4 1 16 x2 26 x1 19 x2 10 x4 15 x1 36 x8 38 x2 39 x1 41 x1 43 x2 35 x3 150mm 2 1 4 3 2 2...

Страница 54: ...53 13 5 7 6 Bifurcated Track Model Operation Video Done...

Страница 55: ...t Hands on Creativity Evaluation Model Assembled Experiment Complete Model Creation Try placing several balls continuously and calculate the number of allocations on each side Try designing different...

Страница 56: ...n is the one who jump the furthest When driving on roads that aren t flat what do you feel Daily Application Daily Application The a deck of an aircraft carrier is not completely flat The flight deck...

Страница 57: ...56 1 Parts List 1 5 3 2 6 4 7 8 x8 1 1 2 x6 2 16 x2 25 x1 31 x2 7 x2 9 x2 12 x2 13 x4 29 x2 39 x5 41 x2 42 x1 43 x4 35 x1 2 2...

Страница 58: ...7 14 9 10 Caution This is able to discharge objects other than the rubber band provided with the toy Do not use with any other objects There is a risk of injury Ski Jump Ramp Model Operation Video Don...

Страница 59: ...ty Evaluation Model Assembled Experiment Complete Model Creation Try placing a high wall at the end of the track and try to successfully jump the ball over the obstacle Try making the ball fly over th...

Страница 60: ...vity Pick Machine 13 Bifurcated Track 12 Spiral Roller 14 Ski Jump Ramp GreenMech 3 Please use the models and principles you ve learned and link two or more machines together to make the ball move and...

Страница 61: ...Winner 60 Design Concept My Artwork 2 1 3 Model Design Model Creation Winner Evaluation...

Страница 62: ...ing This way we can make sure to achieve the effects of a high speed rail What methods can you use to produce a very fast speed Daily Application Daily Application 16 High Speed Track Most high speed...

Страница 63: ...62 Parts List 31 x1 x8 1 1 2 x2 2 16 x2 25 x1 20 x1 9 x1 12 x2 13 x2 39 x4 41 x1 43 x2 44 x2 35 x1 5 3 7 2 6 8 4 1 100mm 2...

Страница 64: ...6 11 9 10 High Speed Track Caution This is able to discharge objects other than the rubber band provided with the toy Do not use with any other objects There is a risk of injury Model Operation Video...

Страница 65: ...y Evaluation Model Assembled Experiment Complete Model Creation Try placing balls of different weight onto the high speed track and observe how the balls roll Try adjusting the angle of length of the...

Страница 66: ...principles as a dog door Daily Application Daily Application In the past in order to prevent an external invasion people dug deep channels around castles and then guided water into the channel This ch...

Страница 67: ...66 150mm 5 3 7 2 6 1 4 Parts List x2 1 2 x2 43 x3 35 x2 40 x2 39 x3 41 x1 28 x2 19 x2 26 x1 16 x2 14 x2 15 x2 17 x2 36 x3 3...

Страница 68: ...67 17 9 8 Going Through the Wall Model Operation Video Done...

Страница 69: ...Evaluation Model Assembled Experiment Complete Model Creation Try observing what happens when balls of different weights trigger the blocks Try adjusting the angle or height of the track and observe w...

Страница 70: ...The balls in the middle stay still Can you feel the impact from the other side of the wall Daily Application Daily Application After school Tony and his friends went to play billiards together This wa...

Страница 71: ...70 5 3 2 6 4 1 Parts List 16 x1 7 x3 12 x3 39 x2 42 x1 43 x2 35 x2 3 x3 17 x2 15 x2 36 x6 2 2...

Страница 72: ...71 18 7 8 Buffer Track Model Operation Video Done...

Страница 73: ...on Model Assembled Experiment Complete Model Creation Try adding a transfer block in the middle see how many you can add Try drawing a few animals on a white sheet of paper cut them out and paste them...

Страница 74: ...o unfold just like how a peacock opens his tail Where else is the lever principle applied Daily Application Daily Application Tony and Grandpa Rudolph went to the zoo together They saw a peacock which...

Страница 75: ...74 150mm 1 5 2 6 3 4 Parts List x4 1 2 x9 35 x1 19 x2 26 x1 16 x9 23 x1 10 x1 9 x2 3 x2 31 x1 6...

Страница 76: ...75 19 7 8 Peacock Model Operation Video Done...

Страница 77: ...ativity Evaluation Model Assembled Experiment Complete Model Creation Try drawing a picture on a white sheet of paper using the blocks apply it to the blocks and see the effect when they open Try buil...

Страница 78: ...ed Track 18 Buffer Track 17 Going Through the Wall 19 Peacock 20 GreenMech 4 Please use the models and principles you ve learned and link two or more machines together to make the blocks trigger the m...

Страница 79: ...Winner 78 Design Concept My Artwork 2 1 3 Model Design Model Creation Winner Evaluation...

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