Thought Questions

Open Ended Problems

Discuss why so many physical systems obey similar dynamic models.

















Describe the dynamic responses of the following systems to a step input.





  • Percentage unemployment to a step increase in minimum wage.
  • Total university enrolment to an increase in tuition.
  • Consumption of tobacco to a step increase in the sales tax on tobacco products.
  • Number of prey animals (e.g. deer) to a change in the number of predators (e.g. wolves)
  • Concentration of ozone depleting gases (CFC's) to an immediate cessation of commercial production of these gases.
  • Blood alcohol concentration of a person to rapid consumption of 4 oz. of alcohol.