Engineering Mechanics of Solids:
Vector Addition



The goal of this exercise is to estimate the resultant of the addition of two vectors. You will be awarded points depending on the accuracy of your estimate and the size of the error tolerance you allow. An estimate within a smaller error tolerance awards you more points, but is, of course, harder to do. You win the game when you get at least 100 points.


  • Select the error tolerance you want to use. Within a 10% Tolerance = 40 points; 20% Tolerance = 20 points; 40% Tolerance = 10 points.
  • Estimate as best as you can the sum of the vectors by dragging and dropping the blue arrow.
  • Click on the Go Again button to start the game over.