lecture10_09 - Phy 2053 Announcements 1. Review: Friction...

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1 Phy 2053 Announcements 1. Exam 1 ± Feb 18, 8:20 – 10:10 pm ± Please get there at least 10 minutes early, and preferably 20 minutes ± Will cover material from sections 1.1 – 5.3 of Serway/Vuille ± Room assignments ± If your last name begins with A through P , you should go to Carleton 100 ± If your last name begins with R through Z , you should go to Pugh 170 ± You be allowed one handwritten formula sheet (both sides), 8 ½” x 11” paper ± Exam conflicts: Anyone with exam conflicts, send email to reitze@phys.ufl.edu and hochan@phys.ufl.edu by no later than Friday, Feb 6!! ± Include the reason for the conflict 2. Professors out of town: ± Prof. Chan is out of town from Feb 5 – Feb 14. His office hours are cancelled for this period, but he will be reading e-mail. ± I will be out of town from Feb 11 – Feb 13 and Feb 17-19. Office hours also cancelled, but I will be reading e-mail ± I wil have special office hours on Monday Feb 9 from 10-12 am and Monday Feb 16 10-12 am Review: Friction Forces Contact between bodies with a relative velocity produces friction ± Friction is proportional to the normal force ± Static friction: the direction of the frictional force is opposite the direction of the applied force, ƒ s μ n ± Kinetic friction: the direction of the frictional force is opposite the direction of motion ƒ k n Review: Energy and Work ± Mechanical Energy Kinetic (associated with motion) Potential (associated with position Work: Work Can Be Positive or Negative Kinetic Energy: Units: 1
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lecture10_09 - Phy 2053 Announcements 1. Review: Friction...

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