PT 1.4 - Testing of Bridge

Testing of bridge:



Calculation of efficiency:


(a)Mass of load on bridge =
10000
gram
(b)Mass of bridge =
335
gram
Efficiency = (a) / (b)
30
No units

Discussion of bridge design after testing:

1. What is your score on efficiency? If the efficiency is high/low, what went right/wrong? 
  
Our score on efficiency is 30. Compared to the other groups, the efficiency is low. When the bridge was tested, the base snapped into 2 but the truss remained. This shows that our base was not strong enough to withstand the load. We should have added more ice cream sticks to the base, make it thicker and stronger.

2. Which part of the bridge started to give way first? Explain using Physics concepts.

The base gave way first as the way because of the way it was built. There is a lot of tension in the bottom ice-cream sticks of the bridge, which is where the truss is connected to the deck. The force of the weight acting on it was counteracted due to the fact that we reinforced with ice-cream sticks. However, not the entire base was reinforced properly, causing an uneven dispersion and thus causing the integrity of the structure, entirely to be compromised. 



3. Which part of the bridge provided the most strength in the testing process? Explain using Physics concepts.

The truss managed to disperse the force equally, however, due to the fact that the base was not strengthened properly, the weakened parts gave way causing the integrity of the structure, entirely to be compromised. 

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