Discussion06 - First Midterm Next Thursday, February 2...

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Unformatted text preview: First Midterm Next Thursday, February 2 Clock starts at 6:00 pm; be in your seat at 5:50 pm Location: MLB (next to clock tower), Auditorium 3 Alternate seating; no seating outside the columns Must have UM ID and #2 pencil(s) Closed-book , 90 minutes, multiple-choice, 20 questions, no penalty for guessing Can have one 35 notecard (double-sided) with any formulas/equations/diagrams Can have a calculator that looks like a calculator No laptops, no cell phones, no text-messaging devices, no communication devices of any type First Midterm Please make sure you enter your form number on your scantron Please make you enter your section number (200) on your scantron Please make you enter your UM ID number on your scantron It is in your best interest to enter all three numbers correctly, so make sure you do it Application of General Physics I Mechanics Racquetball Striking a Wall Newtons Laws Physics 140 Mt. Etna Stewart Hall Friction F Yet another phenomenological contact force arising from electromagnetic interactions Prevents sliding of objects along their interface with respect to each other when their surfaces are in contact Arises from the microscopic roughness of surfaces Directed parallel to the interface , opposing relative motion of the two surfaces, be that actual or potential motion (i.e. if friction did not act) Can think of it as a parallel component of the contact reaction force What about the magnitude of the friction force? Magnitude of the friction force Two regimes : static friction and kinetic friction...
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Discussion06 - First Midterm Next Thursday, February 2...

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