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Mechanics: Newton's Laws of Motion

Newton's Laws of Motion: Audio Guided Solution

Problem Set NL15, Question 5:

A 7.9-kg bucket of water is raised upward from a well by a rope attached to the bucket. The upward acceleration of the bucket is 0.692 m/s/s.  Determine …

a.  … the weight of the bucket.
b.  … the net force experienced by the bucket.
c.  … the tension in the rope.




 

Audio Guided Solution

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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 = 3.52 kg; a = 4.2 m/s/s; Fnet = ???.
  • 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.


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