8 responses to “Mechanical Technical Interview”

  1. Fluxor

    Basic questions should form a basic part of an interview. We use it for both junior and senior candidates alike. Exhibit A: Mr. Flop from my 2nd postk on Engineer Blogs. Lots of on paper experience; little real-life knowledge.

    1. Chris Gammell

      Plus you can always work up to the really hard questions if they breeze through. Needs to be progressive testing.

  2. Jacob

    I hate to be snarky. But if the plane were in a vacuum, it would follow the same trajectory as the ball.

  3. Cherish The Scientist

    I love Newtonian Mechanics. :-)

  4. GEARS

    It’s something that I’ve heard of in interviews but never actually knew someone who went through it. That’s pretty rough.

    I’m not sure I would have even taken them seriously if they said “bring your books”.

  5. FrauTech

    Yes Jacob that was the idea for that part. Was asked first what happens to the ball when dropped in a vacuum, then a second portion to calculate its drop time and therefore the horizontal distance it covers when not in a vacuum but still negating for wind resistance.

    1. Craig

      I think Jacob’s point was that if the plane were in a vacuum it wouldn’t be able to generate any lift, so it would plummet to the earth along with the bowling ball =)

  6. Zohaib

    But i think, the question says that the plane was flying at a certain velocity in vacuum somehow. So dropping the ball will just make the ball fall down to the ground under gravity with the same horizontal velocity as the velocity of the plane. And i am sure to calculate the time when not in vacuum, you just have the equation S = 0.5*g*t^2, as initially the vertical velocity was 0. :)