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Unformatted text preview: ME 3023 Measurements in Mechanical Systems Triple-Beam Balance Instructions LAB # 2 1 Background Beam balances use a series of sliding weights to determine the mass of an object. For the triple-beam balance used in this lab (see Figure 1 1), two of the beams are used for mass determination and one is used as a tare weight; a rotating dial is used to provide the final readability of 0.1 g. Reading of the balance begins with zeroing and leveling the balance, and then determining the mass reading by noting the position of the sliding weights and dial required to maintain balance of the scale. The final reading is obtained by summation of these readings. The basic measurement range of this balance is 0 to 610 Figure 1: Parts of a typical Triple Beam Balance g. This range can be extended by the addition of 500 or 1000-g equivalent auxiliary weights, which are hung at the end of the beams on the hooks provided 2 Reading the Balance (a) The first step is to level and zero the balance. First, place the balance on a level, firm surface,(a) The first step is to level and zero the balance....
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This note was uploaded on 02/09/2011 for the course ME 3023 taught by Professor Chandekar during the Fall '10 term at TN Tech.
- Fall '10