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anonymous

  • 5 years ago

does anyone know: A vehicle parked on a slope, of inclination 20 degrees. The weight of the vehicle acts as a downward force of 10,000N. Find out: what is the magnitude of the resistance force the brakes must be exerting to prevent the vehicle moving down the slope.

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  1. anonymous
    • 5 years ago
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    to prevent the vehicle moving down the slope, you have to make sure that \[\sum_{}^{}Fx=0\] and \[\sum_{}^{}Fy=0\]

  2. anonymous
    • 5 years ago
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    Set up the usual coordinate system with horizontal axis parallel to incline surface

  3. anonymous
    • 5 years ago
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    \[\sum_{}^{}Fx = 0 = 10000 \sin 20^{0} - fr\] fr= resistance force from the brakes so \[fr=10000\sin 20^{o}\]

  4. anonymous
    • 5 years ago
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    ohh thankyou i understand :)

  5. anonymous
    • 5 years ago
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    you're welcome

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