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CHAPTER 1 Introduction to Financial Modeling W hat is a financial model What is the difference between a financial model and the spreadsheet solutions you create or VBA programs you write all the time to answer financial questions or solve financial problems A simple practical answer is that a financial model is designed to represent in mathematical terms the relationships among the variables of a financial problem so that it can be used to answer what if questions or make projections Some of the spreadsheet solutions that people create capture some of these relationships as well and therefore can answer what if questions to some extent But because they are not primarily designed with these objectives in mind they do not try to capture as many of these interdependencies as possible and their structures often make it cumbersome to answer what if questions or make projections with them This may sound a little abstract So let us look at a simple concrete example Suppose you are using a spreadsheet to calculate based on your taxable income what your after tax Continue to download »
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Engineering mechanics Dynamics Division 1 Tutorial 12 Tutorial answer sheets should be submitted in tutorial class Monday itself Data not given can be assumed Text books can be referred 1 A slender rod of length l is pivoted about a point C located at a distance b from its center G It is released from rest in a horizontal position and swings freely Determine a the distance b for which the angular velocity of the rod as it passes through a vertical position is maximum b the corresponding values of its angular velocity fig 1 5 marks 2 A 30 kg uniform circular plate of radius r is supported by a ball and socket joint at point A and is at rest in the vertical xy plane when a bullet with a mass of 15 g is fired with the velocity v0 210 m s k and hits the plate at point C Knowing that r 400 mm and h 700 mm determine a the angular velocity of the plate immediately after the bullet becomes embedded b the impulsive reaction at point A assuming that the bullet becomes embedded in 1 1 ms fig 2 5 marks 3 The uniform thin 2 3 kg disk spins at a constant rate of 6 rad s about an axis 
