Recent content by Joe_I_Am

  1. J

    Undergrad How can I solve simultaneous trigonometric equations involving cosine and sine?

    Just realized I put this in the wrong forum,...sorry guys.
  2. J

    Undergrad How can I solve simultaneous trigonometric equations involving cosine and sine?

    How would one go about solving the following equation? 242= 290cos(theta) + 187cos(phi) 0 = 290sin(theta) - 187sin(phi) I have tried squaring both sides of both equations and adding them, and then using cos2x + sin2x = 1 to narrow some stuff down, and basically only found that: phi +...
  3. J

    High School Possible Explanation for Candle Generator?

    Candle Generator?? A Coworker showed me this video today. Is this even possible? To me it looks like he flips a switch under the table when the light goes on and off, and when the motor goes on and off. I do have a semester of general physics under my belt, but I have no idea how to explain...
  4. J

    Distance a spring has been compressed

    Homework Statement . A 20 kg mass, released from rest, slides 12 meters down a frictionless plane inclined at an angle of 30º with the horizontal and strikes a spring of spring constant K = 200 Newtons/meter as shown in the diagram above. Assume that the spring is...