Recent content by mathzing

  1. M

    How Do You Calculate Spring Length and Ball Speed in Circular Motion?

    yeah that explains it, then he wanted us to find the amount it stretched by, how about the speed of the object, is that correct?
  2. M

    How Do You Calculate Spring Length and Ball Speed in Circular Motion?

    Hmm, i could be wrong, but i think my teacher intended it as a stretching question. Just incase, how do i find the length, iv never had any lessons relating to the actual length? is my speed correct, or will it need editing?
  3. M

    How Do You Calculate Spring Length and Ball Speed in Circular Motion?

    Hi, i am kind of at a loss here. I can't seem to figure out this problem, not sure if i am doing it right or not. All help is greatly appreciated. A ball of mass 4kg is suspended on a light spring with a constant of 850n/m. the ball is spun in a circular orbit at a constant speed so the string...
  4. M

    Plane direction and veloctiy question

    alright, here is the question and how far i got. A light plane is traveling at 175km/h on a heading of N8[degree]E in a 40km/h wind from N80[degrees]East. Determine the planes ground velocity im going to skip the notations so.. planes velocity relative to the air is (175cos8, 175sin8)...
  5. M

    Are |m-n| and |n|-|m| the same?

    hello, can someone please tell me if this is correct? no it is not for my homework. place vector symbols above all letters. |m-n| = |n|-|m| place vector symbols about the letters to specify they are vectors so are they the same?
  6. M

    Solving a Photographic Puzzle: Comparing Heights of Images at Varying Distances

    ok i know that the ho reamains the same but i don't know how i can show the relation between both cases? i don't understand how to get the ratio. edit: here is what i did..tell me if it is right case1 hi/ho = 0.050025012/100 hi/ho = 0.0005052012 case2 hi/ho = 0.05005005/50 hi/ho =...
  7. M

    Solving a Photographic Puzzle: Comparing Heights of Images at Varying Distances

    hey, i tried the following problem and i think i got it wrong well. here is the problem and what i did. problem A photograph of a zebra is taken from a distance of 100m with a 50mm lens. A second picture is taken from a distance of 50m with the same lens. What is the ratio of the height of...
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