Airplane Lift Problem: When an airplane is in flight, the air pressure creates a force vector, called the lift, that is perpendicular to the wings. When the plane banks for a turn, this lift vector may be resolved into horizontal and vertical components. The vertical component has magnitude equal to the planes weight (this is what holds the plane up). The horizontal component is a centripetal force that makes the plane go on its curved path. Suppose that a jet plane weighing 500,000 lb banks at an angle (Figure 6-7g). a. Make a table of values of lift and horizontal component for each 5 from 0 through 30. b. Based on your answers to part a, why can a plane turn in a smaller circle when it banks at a greater angle? c. Why does a plane fly straight when it is not banking? d. If the maximum lift the wings can sustain is 600,000 lb, what is the maximum angle at which the plane can bank? e. What two things might happen if the plane tried to bank at an angle steeper than in part d? Figure 6-7g
th March 17 , 2016 HIST 201 The Second Great Awakening (GA = Great Awakening) I. Significance a. Unprecedented Church Growth i. 1780 – 457 Bapt Church ii. 1820 – 2700 Bapt Church b. New Denominations formed i. 1784 – 1K Methodists ii. 1830 – 500 K Methodists c. Catalyst for Reform movements II. Comparing 1 GA to 2 GAnd a. Similiarities i. Emotional/conversion experience ii. Geographical widespread iii. Interdenominational iv. Sense of a declension b. Differences i. 1 GA: Same clergy/same denominations | 2 GA: new clergy/denominations 1. 2 didn’t require a college education to preach ii. 1 GA: Calvinism (John Calvin) 1. Predestination/Human depravity iii. 2 GA: Arminianism (Jacob Arminius) 1. free will, certainty, perfection III. Meanings of Revivalism a. Conversion Narratives i. 3 Stages: 1. Preconversion 2. Conviction (ambiguity) 3. Conversion (assurance) b. Social Context i. Camp meetings ii. Social Order 1. Yeoman farmers: Independent men 2. Youth 3. Women
