Three steel bolts are to be used to attach the steel plate shown toa wooden beam. Knowing that the plate will support a 110-kNload, that the ultimate shearing stress for the steel used is 360 MPa,and that a factor of safety of 3.35 is desired, determine the requireddiameter of the bolts.Fig. P1.47 and P1.48
Macroeconomics 3/23/2016 6. Expectations Expectations impact consumers’ confidence (how they feel) that may or may not be reflected in A change in real spending consumption {lay off Foreclosure Terrorist attack} is what Influences them. More components of GDP: Investment, Government Spending, and Exports Investment Spending - Investment spending: 18% pf total output - Spending by businesses on: 1. New capital: tools, equipment, machinery, factories Business fixed investment Nonresidential Fixed Investment These 2 terms mean the same thing as capital The biggest component of investment: 75% The biggest component of investment spending so, 75% of the 18% 2. Residential investment = new home 25% 4% subprime market = Shaky credit 4% of 25% of 18% 3. Changes in inventory = 3% Still count the stuff people didn’t buy Increase in inventory are ADD to GDP Decrease in inventory are subtracted Nature of investment spending - Investment spending is the GDP component that fluctuates (moves up or down) the most Sensitive, moody Consumer spending = stable(more) – linked to (generally) more stable determinants Consumer spending- biggest, income is biggest claim to fame Determinants of investment spending 1) Expectations- changes by businesses Expected rate of return on the investment spending will the new the new equipment, building, tool; pay off Long-run Short-run Expected future sales (demand) and profit 2) Interest rates- figure into many formula Interest rates are PRICES—NOT JUST 1 RATE Rates on long-term debt usually higher Higher rate rejects more risk- why more {Divorce, children, disaster, sick, etc…) Rates different but tend to move together Higher interest rates- less investment Lower rates- stimulate more investment 3) Technology and innovation Advances spur investment spending More efficient ways of communicating, producing, and distributing New products require new equipment