11-20+Kathleen+Morris

Today we started off class with reviewing the rest of the problems from Worksheet number twenty seven and twenty eight. This worksheet was practice for Force problems which a test will be given on tomorrow. In order to solve these force problems, you must use the coefficient of friction equations, given to us on page twenty six. Another key equation to use is the one to find sigma F, which is the net force on an object. Mr. Manning wrote a little note on the board to help with solving these problems. He wrote to first draw your free body diagram, and then find sigma F both ways in order to find the solution to your problem. However some of the problems require you to use equations from different units, which can be found on the orange equation sheet. For the remainder of the class period we worked on worksheet twenty nine and thirty, which is titled Even More Force Problems! At the end of class, Mr. Manning handed back our Force of Friction Lab which was completed Monday in class, which was worksheet twenty three and was worth ten points. The image above is an example of a normal force acting on an object. There are certain forces that act upon an object based on the situation, and they are normal force, static friction force, kinetic friction force, tension force, gravitational force, and a buoyant force. If you are given a problem and are asked to find a missing force, then you can use the equation for static friction or kinetic friction to find the force needed.