Review for Test 2 q Responsible for Chapters 5 6 7 and 8 except 8 5 sections 3 6 12 1 12 2 and 12 3 also chapters 1 4 Notes from class Problems worked in class Homework assignments q Test format 18 problems 5 points each multiple choice some T F 2 bonus probs Time 75 minutes q Test materials Pencil eraser and calculator No formulae sheet or paper Closed textbook notes Student ID Rules for the Test q One and only one empty seat between each student q Test version number on scantron must match test version number on roll sheet q No talking during test except to proctors or instructor q Put name and 810 811 number on scantron q Must have correct ID or scantron will not be accepted Material Covered q Chapters 5 6 Forces and Newton s Laws of Motion normal friction weight mass tension ropes pulleys Newton s 1st 2nd and 3rd Laws Free body diagrams frames inertial Application of F ma Spring force uniform circular motion radial acceleration banked curves q Sections 12 1 2 and 3 Universal gravitational force orbital speed orbital period Kepler s Laws q Section 3 6 Relative velocity Galilean Transformation Material Covered continued q Chapter 7 Work and Power kinetic energy work and work done by a variable force work energy theorem graphical method for work power q Chapters 8 Conservation of Energy Conservative and nonconservative forces Gravitational and spring potential energy Conservation of Mechanical Energy work due to nonconservative forces Example Problem In an amusement park ride passengers stand inside a 5 0 m diameter hollow steel cylinder with their backs against the wall The cylinder begins to rotate about a vertical axis Then the floor on which the passengers are standing suddenly drops away If all goes well the passengers will stick to the wall and not slide down Clothing has a static coefficient of friction between 0 60 and 1 0 and a kinetic coefficient between 0 40 and 0 70 A sign at the entrance says No children under 30 kg allowed What is the minimum speed for which the ride is safe to ride Example Problem The electric company bills you in kilowatt hours abbreviated kWh a Is this energy power or force b Monthly electric use of a typical household is 500 kWh What is this in basic SI units c What is the average power usage
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