Energy Theory - General Physics - Past Paper, Exams of Physics

Download Energy Theory - General Physics - Past Paper and more Exams Physics in PDF only on Docsity! St. Vincent College PH 111: General Physics I Exam 3 11/8/2002 The exam consists of 4 questions. There will be 50 minutes to complete the exam. The questions may not be worth the same number of points, read the entire exam before beginning work. Put your name on all pages. Problem 1 30 Problem 2 30 Problem 3 20 Problem 4 20 Total 100 1. (30 pts) a) (5 pts) Upon arrival to room 104 in the physics building, you discover that you have forgotten your calculator. You pick your physics text up off of the desk, return to your dorm room, find your calculator, return to the physics building, and set your physics text back on the desk. How much work is done by the gravitational force on your physics text during this trip? b) (5 pts) When using the conservation of energy theory, 
 to solve a problem, what objects must be included in the “system” so that the work done by the gravi- tational force need not be included in the calculation of ? c) (5 pts) When a pendulum swings back-and-forth, the rope attached to the bob exerts a force on the bob. How much work does this force do on the bob as the bob travels from one extreme position to the other? (Assume the bob has a mass of 1 kg and the pendulum is set up in the physics laboratory at St. Vincent College.) d) (5 pts) Is friction a conservative force? Why or why not? e) (5 pts) When discussing oscillatory motion, what is meant by a restoring force? f) (5 pts) Explain the difference between damped and undamped harmonic oscillators.