Mechanics: Circular Motion and Gravitation

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Circular Motion and Gravitation: Audio Guided Solution

Extra Problem 12:

Tarzan (m = 78.4 kg) tries to cross a river by swinging from a vine. The vine is 10 m long. Tarzan doesn't know that the vine has a breaking strength of 1045 N. What maximum speed (in m/s) can Tarzan have at the bottom of the swing (as he just clears the water) in order to safely cross the river without breaking the vine?

Audio Guided Solution

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Habits of an Effective Problem Solver

An effective problem solver by habit approaches a physics problem in a manner that reflects a collection of disciplined habits. An effective problem-solver...

... eads 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.
... identifies 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, F_norm = ???.
... uses physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
... identifies the appropriate formula(s) to use.
... performs 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.

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