Bending Strength of a Beam    Word Problems      Fun Math Game Tips:

- A '2 by 6' stick of lumber can be more than twice as strong as a '2 by 4' of the same material length,
   when the 'depth = 6' is kept vertical and the stick length is horizontal with support at each end.

- Experiments show that the vertical strength of a horizontal beam varies as the square of its depth.
   Since the value of 62 = 36 is more than double the value of 42 = 16,
   then a '2 by 6' stick of lumber is more than twice as strong as a '2 by 4'.

- Experiments on timber beams with a rectangular cross-section of 'breadth = b' and 'depth = d'
   also show that a beam's loading strength varies directly as its breadth.
   Generally speaking, a beam's bending strength S depends on the formula bd2.

- A beam with b=2 cm and d=3 cm is stronger than a beam with b=3 cm and d=2 cm
   when they have the same material length, since bd2=(2)(32)=18 is larger than bd2=(3)(22)=12.

- This game assumes all the rectangular beams have the same horizontal length
   and are supported beneath their ends with the bending load strength measured mid-length.


- Other experiments for Load = S include the beam length = L and a material constant = K
   to yield a more detailed formula for bending strength S = K(bd2)/(L).

- Engineers use Strength formulas to establish the safe size of beams for community Building Codes.
   This ensures safe floor joists, door and window headers, roof trusses and bridge components.

- Refresh/Reload the web page to start over again.
- If the game doesn't respond to keyboard input,
    click inside the game area to reset the game's focus.
- The score report automatically appears after you have made 10 choices.
- The Formula score is based on your choices only and does not count the kangaroo hits.
- The Game score is reduced by the number of kangaroo hits.
- The game speeds up as your score increases. Adjust this with the - and + keys.

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