Today we completed the energy lab. We will apply conservation of mechanical energy tomorrow.
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Today we talked about energy and learned how to calculate kinetic energy and gravitational potential energy. Tomorrow we will be doing a lab with hotwheels.
The chapter quiz for Uniform Circular Motion and Orbits will be tomorrow (Friday). The study guide with key concepts and review packet solutions are linked below. Also linked are all of the assignments from this chapter.
study guide/ review problems centripetal acceleration centripetal force circular motion centripetal force examples from class Today we looked at the math behind circular orbits. We used Newton's Law of Gravity to derive Kepler's T^2/R^3 ratio. You also completed an investigation into the difference between a circular orbit and an elliptical orbit using an online animation.
Today we completed the last problem on then centripetal force worksheet. It was the most difficult problem on the worksheet and you all did great with it.
We then began talking about the orbits of planets and satellites. We will continue tomorrow... Today we watched a mechanical universe video "the apple and the moon". Monday we will apply this to orbits of satellites and planets. For homework, you should try the third problem on the worksheet. HINT if you are stuck on the FBD, the normal force is the centripetal force, and static friction is what is holding the person in place.
Today we talked about the physics of roller coasters and other amusement park rides. Homework is problems 1 and 2 on the worksheet.
Today we talked about centripetal force. We practiced drawing free body diagrams and identifying which force/forces were acting centripetally. No homework since we did not finish all of the practice problems.
Today we began analyzing the motion of objects that are moving in a circle. We learned how to find the speed of an object moving in uniform circular motion, and also how to calculate the centripetal acceleration. Homework is p. 156 #1,2,5,8,9
Solutions for Part 2 of the final review are available in the google drive folder. The final two problems are solved on the first page of this link (ignore the rest). See the previous post for additional resources to help you review for the exam tomorrow. Remember, the exam primarily covers forces, but you will also need to remember how to use the kinematics equations to find displacement, time, final velocity, etc. You will be given an equation sheet with all of the formulas, so there is no need to memorize them (unless you want to).
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Reminders:
10/16/2018 - Test on one dimensional kinematics (tentative)
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