Work and Energy
Big Ideas 3, 4, 5
Learning Objectives: 3.E.1.1, 3.E.1.2, 3.E.1.3, 3.E.1.4, 4.C.1.1, 4.C.1.2, 4.C.2.1, 4.C.2.2, 5.A.2.1, 5.B.1.1, 5.B.1.2, 5.B.2.1, 5.B.3.1, 5.B.3.2, 5.B.3.3, 5.B.4.1, 5.B.4.2, 5.B.5.1, 5.B.5.2, 5.B.5.3, 5.B.5.4, 5.B.5.5, 5.D.1.1, 5.D.1.2, 5.D.1.3, 5.D.1.4, 5.D.1.5, 5.D.2.1, 5.D.2.3
Upon completion of this unit, you should be able to:
Essential Questions
Lab Activities
Learning Objectives: 3.E.1.1, 3.E.1.2, 3.E.1.3, 3.E.1.4, 4.C.1.1, 4.C.1.2, 4.C.2.1, 4.C.2.2, 5.A.2.1, 5.B.1.1, 5.B.1.2, 5.B.2.1, 5.B.3.1, 5.B.3.2, 5.B.3.3, 5.B.4.1, 5.B.4.2, 5.B.5.1, 5.B.5.2, 5.B.5.3, 5.B.5.4, 5.B.5.5, 5.D.1.1, 5.D.1.2, 5.D.1.3, 5.D.1.4, 5.D.1.5, 5.D.2.1, 5.D.2.3
Upon completion of this unit, you should be able to:
- define mechanical work and compute the work done in various situations.
- differentiate between work done by constant and variable forces and compute the work done by a spring force.
- study the work & energy theorem and apply it in solving problems.
- define and understand potential energy and learn about gravitational potential energy.
- distinguish between conservative and non‐conservative forces and explain their effects on the conservation of energy.
- define power and describe mechanical efficiency.
Essential Questions
Lab Activities
- Pulley Lab – Students will use a pulley arrangement to lift varying amounts of mass. Students will show that the work done by the simple machine is less than the work put in and find average efficiency of the system.
- Conservation of Energy – Students will set a mass‐spring system in motion and will measure, calculate and compare the changes in elastic and gravitational potential energies