Recent content by pletharoe

  1. P

    Force = mass * acceleration. A question about gears.

    This question is about push bikes, but could be applied to anything with a versatile engine and a gearing mechanism. My bike is propelled by pushing on the pedals. Whether I use a high or low gear, the force remains the same. If the force and mass remain constant, how come I can accelerate...
  2. P

    General relativity and jet travel makes you fat?

    Hi Guys, thanks for the answers. George: I used your equation, if "V" is in meters per second, I get a square root of a minus number so I used a bit of poetic license to deduce that the "V" should be a factor relative to the speed of light (257 m/s / 299792458 m/s) is that right? If so, the...
  3. P

    General relativity and jet travel makes you fat?

    Hi everyone! I'm a pilot on a private jet, in conversation one of the crew mentioned that "You get younger when flying." Now I had to correct him saying that actually it's just that time slows down as you go faster. Unfortunately for the flight attendant, going faster also means that she puts...
Back
Top