Mechanics: Circular Motion and Gravitation

Circular Motion and Gravitation: Audio Guided Solution

Problem Set CG7, Question​ 4:

Avery is watching cartoons on the Nostalgia Network and a scene from the Tarzan toon reminds him of Physics. He created this problem and wants you to solve it:
 
The 78.4-kg Tarzan tries to cross a river using a 10.00-m long vine that has a breaking strength of 1045 N. What is the maximum speed that Tarzan can have at the bottom of the circular arc in order to avoid breaking the vine?
 




 

Audio Guided Solution




Habits of an Effective Problem Solver

  • Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
  • Identify the known and unknown quantities in an organized manner. Equate given values to the symbols used to represent the corresponding quantity - e.g., m = 61.7 kg, v= 18.5 m/s, R = 30.9 m, Fnorm = ???.
  • Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
  • Identify the appropriate formula(s) to use.
  • Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.


 

Read About It!

Get more information on the topic of Circular Motion and Gravitation at The Physics Classroom Tutorial.



 

Watch It!

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