5. A rock of mass 3.0 x10² g is tied to one end of a string that is 2.0 m in length. Holding the other end above his head, a boy swings the rock around in a circle whose plane is parallel to the ground. (a) If the string can withstand a maximum tension of 4.5 N before breaking, what angle to the vertical does the string reach just before breaking? Draw the FBD for the rock. State the balanced and unbalanced forces directions. (b) At what speed is the rock travelling just as the string breaks? 2.0 m 0 R

5. A rock of mass 3.0 x10² g is tied to one end of a string that is 2.0 m in length. Holding the other end above his head, a boy swings the rock around in a circle whose plane is parallel to the ground. (a) If the string can withstand a maximum tension of 4.5 N before breaking, what angle to the vertical does the string reach just before breaking? Draw the FBD for the rock. State the balanced and unbalanced forces directions. (b) At what speed is the rock travelling just as the string breaks? 2.0 m 0 R

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 9WUE: A man whirls a 0.20-kg piece of lead attached to the end of a string of length 0.500 m in a circular...

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