EGR 220: Engineering Statics Dr. Hans Chapman Date: .......cceceeeiiicncncnanne. Assignment 2 (Questions and Problems) Last Name: .......ccoiniiiiiiianinn First Name: .....cccoeiieieieiiians Topic: Chapter 1 General Principles and Math / Physics Review Question 1: The law of attraction between two particles in terms of the universal gravitational constant G is known as the law of Question 2: A scalar is a quantity that possesses only Question 3: True or False? In pure mathematical terms, a vector always possesses a unique line of action. ; Question 4: State, below, the three base units in the SU system of measurements: (i) Force is measured in (ii) Weight is measured in (iii) Time is measured in Question 5: Give the most appropriate reason for using three significant figures in reporting results of typical engineering calculations. (A) Historically slide rules could not handle more than three significant figures. (B) Three significant figures gives better than one-percent accuracy. (C)Telephone systems designed by engineers have area codes consisting of three figures. (D)Most of the original data used in engineering calculations do not have accuracy better than one percent. Question 6: For a static's problem, your calculations show the final answer as 12345.6 N. What should you write as your final answer? (A)12345.6 N. (B)12.3456 N. (C)12 kN. (D)12.3 kN. Problem 1: Newton's law of Universal Gravitation [Refer to Page 7 of text] Given that two identical spheres, each with a mass of 200 kg and radius of 300 mm are touching each other. Determine, to 3 significant figures, the gravitational force acting between the two spheres. Solution: Strategy: State in the grid space below, only the 'Find' and 'Given' elements of the problem. (i.e, what specific quantity are you required to find? / What are the given parameters? Calculation and Answer: Show your calculation steps, including the appropriate formula. Then plug in the given parameters, and state the answer. *Do not just state the