Recent content by Lnav1982

  1. L

    What is the maximum spring stretch for a resting box on an inclined plank?

    Ok, well I tried using F=-Kx and solve for x but that didnt work becuase I didnt use the other values. Then using Fs=usN after finding N which I think was = mgcos(theta) to find Fs, then plug that into F=-kx. But this didnt work as well. What am I doing wrong? Thanks
  2. L

    What is the maximum spring stretch for a resting box on an inclined plank?

    I am having problems with this question: An m = 2.12 kg box rests on a plank that is inclined at an angle of q = 64.5° above the horizontal. The upper end of the box is attached to a spring with a force constant of 15.2 N/m. If the coefficient of static friction between the box and the...
  3. L

    Max Speed to Maintain Road Contact over Bump

    The forces are force from the bump? Normal force? If it loses contact wouldn't gravity act on the car? The car is accelerating.
  4. L

    Max Speed to Maintain Road Contact over Bump

    I am having a hard time trying to figure out this problem: What is the max speed that you can drive the car over the top of the bump without losing contact with the road. I have the radius= 66.7 m, constant speed of car = 16.4m/s, and weight of your passenger=57.0kg. With these numbers I was...
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