Index of Refraction

A day back after a half day is always tough, but everyone muddled through.

Honors Physics A grabbed gravity today and discussed the factors that affect the magnitude of gravitational attraction between two bodies. All matter generates gravity, but the magnitude of the attraction between objects depends directly on the masses of the objects and inversely on the distance between them. Distance is the bigger player, as the relationship is an inverse-square one. A change in mass has less of an effect on gravitational attraction than an equal change in distance. We’ll go over the gravity homework tomorrow and use the remaining class time to review for Monday’s quiz on rotational motion.

Physical Science B reviewed the function of machines and how machines achieve mechanical advantage by manipulating either input force or distance. They then jumped into the specific types of machines, concentrating first on the lever family. We went over the three classes of basic levers, types of pulleys and wheel and axle systems. You might take time today to look around you and see if you can identify the different classes of levers in everyday objects. Tomorrow, we will go over the inclined plane family and the lab that you do on Monday will look at both machine families by letting you investigate simple inclined planes and the three classes of levers.

Physical Science E began their discussion of machines with an overview of the basic function of machines and how machines provide mechanical advantage. They then began to discuss the lever family of simple machines, exploring simple levers and pulleys. Tomorrow, we will finish up the lever family with a discussion about the wheel and axle and then tackle the inclined plane family.

Physics F and G worked on test corrections and/or lab write ups. Tomorrow, we dive deeper into centripetal force and how it affects the motion of matter.

Homework

Honors Physics A: Practice 7I and Chapter Review items #31, 35, 40
Physical Science B: Chapter 12 Review items #28, 29, 31, 32
Physical Science E: Complete the 12.2 Section Review
Physics F and G: Complete test corrections/labs