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Physics, 26.03.2021 02:20, haleymoodie1998
which of the following identifies a measurement , its SI unit, and the tool most commonly used to measure it
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Answers: 3
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Physics, 22.06.2019 00:30, Solany6426
Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction ĂŽÄžs=0.3. four forces act on it: the applied force f (directed θ=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=ĂŽÄžsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosθââĂŽÄžsn=0 fsinθ+nââmg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, θ, and ĂŽÄžs (no n).
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Physics, 23.06.2019 04:50, mountainwilson
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Physics, 23.06.2019 07:00, mrichardson2880
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which of the following identifies a measurement , its SI unit, and the tool most commonly used to me...
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