Quiz answers -- Newton With 2-D Kinematics
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Find the tension in two segments of rope supporting a mass. Segments are angled at the same angle, relative to horizontal.
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DescriptionMagnitudeUnitsDirection
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Angle 30degreesrelative to horizontal
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Mass 80kgNA
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Weight 784NDown
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Tension Vertical Component 392NUp
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Tension 784N
Parallel to rope (either direction)
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A sliding mass on an incline is connected via a string and pulley to a hanging mass.
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DescriptionMagnitudeUnitsDirection
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Angle of incline to horizontal (degrees)50degreesAbove rightward
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Sliding mass (kg)12kgNA
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Hanging mass (kg)5KgNA
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Coefficient of friction0.2NANA
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Weight of sliding mass (N)117.6N Down
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Perpendicular Component of sliding mass weight (N)75.6N
Perpendicularly into the surface
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Parallel Component of sliding mass weight (N)90.1N
Parallel to the surface, downhill
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Weight of hanging mass (N)49.0NDown
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Normal force acting on sliding object (N)75.6N
Perpendicularly out of the surface
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Friction -- If object moves (N)15.1NOpposing Motion
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Net Force Parallel To Incline (N)26.0NDownhill
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Acceleration (N)1.5m/s^2Downhill
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String Tension (N)56.6NNA
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A Mass is hanging by a rope from the ceiling of a train car. The rope makes a constant angle with horizontal.
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Mass (kg)3kgNA
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Angle between rope and horizontal ceiling (degrees)70degreesNA
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Weight of hanging mass (N)29.4NDown
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Vertical component of Tension (N)29.4NUp
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Tension (N)31.3N
Parallel to rope (either direction)
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Horizontal Component of Tension (N)10.7NLeft
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Acceleration of Hanging Object (N)3.6m/s^2Left
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A sliding box is being pulled by a rope. The rope extends to the right of the mass at an upward angle, relative to horizontal. The box slides righward.
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DescriptionMagnitudeUnitsDirection
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Box Mass6kgNA
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Angle of rope 40degreesAbove rightward
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Coefficient of Kinetic Friction0.4NANA
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Force applied by rope60N 30 degrees above rightward
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Box Weight 58.8NDown
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Y component of Tension38.6NUp
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X component of Tension46.0NRight
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Normal Force of surface against box20.2NUp
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Friction8.1NLeft
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Net Force of Entire System37.9NRight
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Box Acceleration6.3m/s^2Right
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