The Systeme International (SI) unit) for conductivity is the siemen per centimeter (S/cm). This sensor can be used to explore the effects of temperature and concentration on the electrical transport properties of aqueous solutions. These measurements can be used to investigate factors that influence the electrical conductivity of liquids. The PS-2116A Conductivity Sensor measures ionic and non-ionic molecules in aqueous solutions. Sensor Extension Cable (PS-2500) Introduction = -IMA.*See the PASCO catalog or the PASCO web site at for more information. Applying Newton's Laws of Motion to each mass in this system, one obtains the following two equations: * Verifying this is simple: Assume that the total distance up the incline is/ and that the height of the incline is Using Equation (11.6). Again, the opposite end of the string is connected to a mass m and this mass (m By doing this, we may gain a mechanical advantage. Simple Machines A simple machine is any device that takes an input force Fapplied at some point and changes its magnitude and/or direction to an output force Fout at another point. If the force acting on an object is along the displacement (which is the special case that will be studied in this experiment), 0 = 0° so Equation (11.2) reduces to WFd (11.3) The units for work are (N. W=Fa (11.1) In scalar notation W = Fd cose (11.2) where is the angle between the force vector and the displacement vector. In vector notation, it can be written as a scalar product or dot product. Work In physics, work W is defined as a force Facting through a distance d. PASCO Track Support Attachment 11.50-8 Mass Hanger and Assorted Masses 4. To calculate the efficiency of simple machines. To study the concept of work as it applies to simple machines. Transcribed image text: (b) According to Equation (11.14), how does the efficiency change as 0 increases? (c) What is physically happening to cause this change in efficiency?
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