earth rotates @1670 km per hour. so, if the helicopter maintains static at a height above ground, after an hour, would a object or a point on earth / ground have moved away from helicopter at about 1670 kms.
2006-12-18 20:38:05 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
well .. it will move .... but with a relative speed not equal to 1670 Km but much lower .....
first, the helicopter initially has a velocity equal to that of the surface of the earth so if it moves away it will not show a relative change in velocity, but since the motion will be through the line that pass through the earth center, it will be located at a further distance from the earth center of gravity, and since there is a conservation in angular momentum, we can say :
m * v * r = constant
so, if the radius of the rotation increases then the tangent and also the angular velocities will both decreases.
we can see the the rising bodies will move backwards away from earth in a relation to the moved distance.
2006-12-18 23:06:35 · answer #1 · answered by wadgare2 1 · 0⤊ 0⤋
No ... since the helicopter is hovering in the air and the air is also rotating with the earth and since the helicopter left the ground with the same speed as the earth under it, it will not zoom along at some ridiculous speed. That's like asking if you jumped into the air would you die when you hit the other side of the room at 700 mph. It just doesn't happen.
2006-12-18 22:22:34 · answer #2 · answered by Gene 7 · 0⤊ 0⤋
Did you know if a helicopter hovers in a valley or even in a clearing of a jungle that is too small, the blades turning will start to turn the air with it. As the air speed increases trying to catch up with the blades the chopper will lose lift and stall. I used to love the TV show that had a chopper stored inside a volcano and started each show showing it slowly rise up out of it. The space looked too small - I don't think they would ever be able to get it out once they went in.
2006-12-19 03:10:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
nope it wont. because although the helicopter is off the ground, it is still bound to earth's gravitation. and this will make the helicopter still rotating with earth.
2006-12-18 20:49:39 · answer #4 · answered by the_justin 3 · 0⤊ 0⤋
No, but the rotor of a gyro, will appear to turn, and it is because the earth moved, and it did not.
2006-12-18 23:45:23 · answer #5 · answered by Anonymous · 0⤊ 0⤋
See answer by "wadgare2". That hits your answer well enough.
I used to fly 'em in Viet-Nam. a
Boot in the Buns to fly when all is clear !
2006-12-20 15:17:54 · answer #6 · answered by rice_dog 3 · 0⤊ 0⤋