Engineering Economics, Excel 3, and destroy bridge project

This morning he discuss about cash flow diagrams and compound interest.

Solving problems

Formula of P=principle, I=interest rate, N=Years or month, F=future value, and A=annual

 Using the Excel difference of simple and compound interest.

 Minimum monthly payment of $50 per month.

Minimum monthly payment of $100 per month.

 Testing the bridge my is 57.8 g, and it contains 70 pieces in them.

  Recording of the compressor of my bridge.

 After compressing my bridge, it did not destroyed

 Here is the result: me and Erick did not make the cut because we have been disqualified.

 My bridge was alright, but one of my support was damage but just a minimum.

Parts, Matter, density, compress, metal, and bridge 2

Today, we began to look inside the robot's part of materials.

The five proprieties of Matter.

The difference of a egg that float or not is because of the density.

 The ruler has more durable.

The difference of a diving board was made of fiber glass, and the other has less elastic because

of the gravity itself.

We began testing the spaghetti that holds against 1/2 kg each time before it breaks by stacking

that can up to 10-40 pieces of spaghetti.

This gentleman demonstrate of how to compress a egg by crushing it with two hands.

The 5 properties of mental.

The strength of the sponge on the green side has more durable and dense, and
the other side has more elastic.

 Steel bar can be place by reinforce the concrete from the near bottom.

Next, we began to build a bridge with 40 pieces of spaghetti and two sticks of hot glue, so we can test the bridge that can support 50 grams in the center over a span of 18 inches.

Our bridge is still support 50 grams,  and it did not break.

As a result, we made it to 19".

Measures, robot apart, formulas, and a bridge

 Today, we are measuring this wood with a ruler.

We wrote 5 different dimensions used to measure things.

We put 7 things of how to measure it.

Prof. Mason wants us to dismantle our robots to put them back in the box.

After our break, we tried to solve the formula of the units for modulus of elasticity and the other is the heat transfer rate q.

 He asked us to guess of how big is in this classroom.

We estimate the difference of a sumo wrestler and a model of their foot. To see the difference
of density and surface. We choose sumo wrestler because the force is so much density.

We think of something that relates a 6 in., so we chose subway sandwich for an example.

 We measure the soda can.

We measure the volume of the can was 374 cm³, and it was overestimate of -30 cm³

He was testing the same result by filling the water.

Our next activity was to build a bridge with 30 pieces of spaghetti and 2 hot glue to design and fabricate a bridge that can span 8" and hold 100 kg mass to 700 kg mass.

First test: 100 Kg

Second test: 300 kg

Third test: 500 kg

Others did not pass it.

Fourth test: 600 kg

Some of them have made it.

Fifth test: 700 kg

My group have made a good process.

Final test: 1,000 kg

We completed the bridge, but it snap at the moment; however, we made a record.