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Magpie0001 · 04-22-2003, 08:29 AM

Ok, so call me a freak but I was going up the escalator in a station this morn & i started thinking about gravity. It seems logical (to me) that climbing a moving stairs is more difficult than a static stairs - coz youre actually tarvelling faster/farther than you would on a nonmoving. SO,
1. Does the force of gravity increase when youre travelling upwards?
2. If im travelling straight up, how fast do I need to be going to double the force of gravity?
3. And at 45 degrees?
4. If im travelling on a train/lift/whatever at the speed of sound (Mach 1) and I start running towards the front of the train how fast am I travelling & is the force of gravity on me different to the force on said vehicle?

04-22-2003, 08:29 AM	#1 (permalink)
Magpie0001 Nobody Loves Me Location: Irish In Madrid	Force of gravity? Ok, so call me a freak but I was going up the escalator in a station this morn & i started thinking about gravity. It seems logical (to me) that climbing a moving stairs is more difficult than a static stairs - coz youre actually tarvelling faster/farther than you would on a nonmoving. SO, 1. Does the force of gravity increase when youre travelling upwards? 2. If im travelling straight up, how fast do I need to be going to double the force of gravity? 3. And at 45 degrees? 4. If im travelling on a train/lift/whatever at the speed of sound (Mach 1) and I start running towards the front of the train how fast am I travelling & is the force of gravity on me different to the force on said vehicle?