Lesson 6: Balanced and Unbalanced Forces
Duration of Days: 3
Lesson Objective
Students will use free body diagrams, the formulas for various forces and the description of an object's motion to calculate forces in both balanced (equilibrium) and unbalanced scenarios. They will apply all skills attained in the unit thus far.
How do we know an object is at equilibrium?
How can we tell which forces sum to zero?
Is it possible for no forces to be acting on an object?
If an object is unbalanced, how do I determine the net force on it?
Static equilibrium
Dynamic equilibrium
Net force
HS-PS2-1
Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.
GS3: Modeling
Students can construct and use models to represent and analyze phenomena and systems.
GS4: Data Analysis and Interpretation
Students can analyze and interpret scientific data and solve problems using a range of tools, technology and mathematical techniques.
This lesson will complete the forces unit. It will encompass all skills and knowledge attained in earlier lessons, resulting a complete understanding of forces acting on an object and determining which can be calculated and by which means.
DOK: 4
MPS Science Differentiation Strategies
https://tinyurl.com/5n6c24k7
Students will be given a comprehensive exam assessing their ability to draw free body diagrams, describe and determine which forces are in equilibrium, as well as use formulas to calculate forces, accelerations, masses or coefficients of friction.