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izzy777 Group Title

please helpppp!!! Robin pulls a rope attached to a sled with a force of 50 N. The rope makes an angle of 30° with the ground, as shown below. What force will move the sled vertically upwards? 183.4 N 25 N 43.3 N 100 N

  • 2 years ago
  • 2 years ago

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  1. izzy777 Group Title
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    • 2 years ago
  2. ganeshie8 Group Title
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    50/sin 30

    • 2 years ago
  3. izzy777 Group Title
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    wait i dont get it?

    • 2 years ago
  4. ganeshie8 Group Title
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    by applying 50N at an angle of 30 degrees, the sled is sliding horizontally, right ?

    • 2 years ago
  5. izzy777 Group Title
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    yes

    • 2 years ago
  6. ganeshie8 Group Title
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    so, if we apply the same force vertically, the slide will move up vertically

    • 2 years ago
  7. ganeshie8 Group Title
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    |dw:1340941337117:dw|

    • 2 years ago
  8. ganeshie8 Group Title
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    so, we need to calculate the value of "x" for which the vertical component becomes "50"

    • 2 years ago
  9. ganeshie8 Group Title
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    use trigonometry and find..

    • 2 years ago
  10. izzy777 Group Title
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    i don't know how to solve it...

    • 2 years ago
  11. izzy777 Group Title
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    im so confused

    • 2 years ago
  12. ganeshie8 Group Title
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    see the angle 30 once. can you tell whats the opposite side for that angle ?

    • 2 years ago
  13. izzy777 Group Title
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    well one of the angles = 90 degrees the other one has to be60

    • 2 years ago
  14. ganeshie8 Group Title
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    |dw:1340941561296:dw|

    • 2 years ago
  15. ganeshie8 Group Title
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    \(\huge sin\ 30 = \frac{50}{x}\)

    • 2 years ago
  16. ganeshie8 Group Title
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    \(\huge x = \frac{50}{sin\ 30} = 100N\)

    • 2 years ago
  17. ganeshie8 Group Title
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    hope it is clear now... ?

    • 2 years ago
  18. izzy777 Group Title
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    yes! i think i get it now :) thank you so much can you help me with one more question?

    • 2 years ago
  19. ganeshie8 Group Title
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    sure..

    • 2 years ago
  20. izzy777 Group Title
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    A force of 8 N is exerted on a box. The component of this force which acts along the ground has a magnitude of 6.93 N, as shown below. What is the measure of angle x? 40° 50° 60° 30°

    • 2 years ago
  21. izzy777 Group Title
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    • 2 years ago
  22. ganeshie8 Group Title
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    use cosine

    • 2 years ago
  23. izzy777 Group Title
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    ?

    • 2 years ago
  24. ganeshie8 Group Title
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    cos x = adj/hyp = 6.93/8 x = cos^-1(6.93/8) degrees

    • 2 years ago
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