Lab_Manual_07 - Lab 7 Circular Motion 1. 2. Objective: To...

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Lab 7 Circular Motion 1. Objective: To study the effect of mass and radius in circular motion. 2. Equipment: Centripetal force apparatus, slotted weights and hangers, digital stop watch, a length of string. 3. Theory: Centripetal force is given by: 2 22 2 where v = r mv F r mr Fm r r ω = == Or, Mg = m r ω 2 . …(i) Each time r changes, ω changes. Therefore, r ω 2 is the independent variable and M is the dependent variable 4. Procedure : (a) Constant Mass, m Open the digital stop watch, open it and minimize it. Place the watch on the video when it opens. Measure the period T of circular motion of a mass m by measuring the time taken by the mass to go round 10 times in a circle of radius r. Run three trials and take the average time. Obtain T, the period of revolution and calculate the angular velocity ω as T π 2 = . Repeat the experiment for 6 different values of r. The centripetal force in this case is provided by the tension in the spring. For each value of r, measure the centripetal force by stretching the spring up to the appropriate r value. If
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Lab_Manual_07 - Lab 7 Circular Motion 1. 2. Objective: To...

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