Equilibrium

The Equilibrium Concept Builder includes 36 questions organized into 12 Question Groups and spread across three difficulty levels. Each question involves the same task - add an east-west vector and a north-south vector to an object so that it is in a state of equilibrium. Questions in the same difficulty level include the same number of given vectors. Questions in the same Question Group are very similar, having the same number of given vectors to be balanced and having those vectors in the same quadrants.

The three difficulty levels are differentiated as follows:
 

• Apprentice Difficulty Level Questions 1-4: A single vector is given. The vector makes an angle to the traditional coordinate axes. Students must add an E/W vector and a N/S vector to balance the force. 
• Master DifficultyLevel Questions 5-8: Two vectors are given. The vectors make an angle to the traditional coordinate axes. Students must add an E/W vector and a N/S vector to balance the forces. 
• Wizard Difficulty Level Questions 9-12: Three vectors are given. The vectors make an angle to the traditional coordinate axes. Students must add an E/W vector and a N/S vector to balance the forces. 

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Equilibrium