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pathosdebater

  • one year ago

Please help! Any help at all. Please! ;( Two boxes are being pulled up a 30.0 degree ramp with a cable at a constant velocity. Box 1 (weight of 44.1 N) is attached to the cable and also has a chain which is attached to Box 2 (34.3 N) being dragged behind Box 1. Assume a coefficient of kinetic friction, mu(k) = 0.250, for all surfaces. What is the friction between Box 1 and the ramp in newtons? What is the friction between Box 2 and the ramp? What is the acceleration of the boxes? What is the tension in the chain? What is the tension in the cable?

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  1. wio
    • one year ago
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    |dw:1357959165026:dw|

  2. wio
    • one year ago
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    |dw:1357959301874:dw| @pathosdebater You need to figure out the angle between gravity and the normal, or gravity and the tension, whichever is easier for you.

  3. wio
    • one year ago
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    There are only three main forces at play here: 1) gravity 2) normal 3) tension

  4. pathosdebater
    • one year ago
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    I'm not sure what you mean?

  5. pathosdebater
    • one year ago
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    I'm taking this class for fun online (since it is a few grades above my current one) and I want to show the teacher I have what it takes to stay in the class. I was out of town and wasn't able to study for the test. Please help me fast. (It's timed). I really want to stay in the class.

  6. wio
    • one year ago
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    |dw:1357959891979:dw|

  7. wio
    • one year ago
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    |dw:1357959924844:dw|

  8. wio
    • one year ago
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    Thus the angle between gravity and tension is going to be 60

  9. wio
    • one year ago
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    |dw:1357960118806:dw|

  10. wio
    • one year ago
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    Now using trig you can convert your gravity force into it's normal component and tension component.

  11. wio
    • one year ago
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    Normal components can be used to calculate force, and then tension obviously will tell you tension.

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