Pre Lab Questions 1 In this lab you will be rotating a mass on one side of a string that is balanced by a second mass on the other end of the string Figure 5 Apply Newton s Second Law of Motion to mass 1 m1 and mass 2 m2 to solve for the period of mass 1 Hint assume m1 4m2 How is the centripetal force on m1 related to the force of gravity on m2 m1v2 l m2g lg 4 v 2 Figure 5 Rotating mass 2 Draw a free body diagram and solve for the centripetal acceleration in terms of and g for one person riding on the amusement park ride in Figure 3 Tan v 2 lg 3 The around the world yo yo trick is completed when you twirl a yo yo in a vertical circle If the yo yo was in uniform circular motion compare the force of tension at the top of the circle to the force of tension at the bottom of the circle Hint Drawing a free body diagram will be helpful T top mv 2 l mg T bottom mv 2 l mg 2014 eScience Labs LLC All Rights Reserved 2014 eScience Labs LLC All Rights Reserved
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