10-1-08

Today, October 1, 2008, in the totally awesome world of physics, with the absolute coolest dude Mr. Manning, no much went on. First off, the class went over the DAILY QUESTION! Today's question asked, "What is wrong with this student's claim?" 'When Burl stands in the middle of the ruler, each scale weighs one half of the ruler and one half of Burl.' The correct answer to the Daily Question is, the scales do not "weigh" anything, they READ the force. Prior to the exam, Mr. Manning review the lab on Static Equilibrium! Remember, Static Equilibrium occurs when an object is at rest. An object cannot be at equilibrium when only acted upon by one force!!!! Also, the class went over the practice problems given out on Tuesday. Mr. Manning continued to review what a net force is. When an object is in equilibrium the net force on the particular object is ZERO. Here is a good problem dealing with net force: If you are standing on a bathroom scale what is the net force on the scale? Try not to over think this one. Remember the AutoControl rap! Give up??? The correct answer is zero, which bring us to another important topic of unit two. Support Force. A support force is a very cool thing that cannot be seen. It is a NORMAL force acting against a force on an object. Normal forces act perpendicular to the original force. The support force "should be close, if not the exact same, magnitude as the opposing force. Any discrepancy between the reading of the force is due to human error or friction. After the ever so interesting review, the class was given the test for UNIT 2. The exam was only worth 18 points! The review packet (due today) holds more weight than that!!! Be sure to know the differences between dynamic and static equilibrium and also MAKE SURE TO LOOK OVER THE BURL EXAMPLES! (hint, hint) After the exam two new paper were to be picked up on Mr. Manning's desk. The first was titled, "Unit 3 Knematics pg. 1", the second, "Talkin' the Talk pg.2". WOOOOO HOOOOOOO UNIT 3!!!!!!!!!!