Mechanics: Vectors and Forces in 2-D
Vectors and Forces in 2-D: Audio Guided Solution
Extra Problem 13:
A 2-mass system is established as shown in the animation (use button below). A 2.00-kg mass is sliding on a surface inclined at an angle of 51.2 degrees. The hanging mass is allowed to drop from rest. It takes 1.36 seconds for the hanging mass to fall through 1.98 meters and hit the ground. The coefficient of friction between the surface and the sliding mass is 0.324. What is the mass (in kg) of the hanging mass?
Audio Guided Solution
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...
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... 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.
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... identifies the known and unknown quantities in an organized manner, equating given values to the symbols used to represent the corresponding quantity - e.g., m = 1.25 kg, µ = 0.459, vo = 0.0 m/s, Ø = 41.6º, vf = ???.
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... uses physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
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... identifies the appropriate formula(s) to use.
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... performs substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Vectors and Motion in Two Dimensions at The Physics Classroom Tutorial.
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