Can anyone explain this to me?
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I need explanation Watch
- Thread Starter
- 06-10-2016 11:55
- 06-10-2016 12:03
Centripetal force for the bucket would come from the rope
- 06-10-2016 12:15
Now if there was a disaster and the lift went into freefall you'd feel weightless, you'd be accelerating downwards at the same rate as the lift and the lift wouldn't be pushing on your feet at all.
If someone had strapped a rocket engine to the top of the lift to make it accelerate downwards faster than it would fall due to gravity... you'd lose contact with the floor of the lift car and be forced down by the ceiling.
Now for rollercoasters etc going 'over the top' - they are in circular motion and therefore accelerating centripetally - which at the top of a loop means downwards. If the acceleration is greater than the acceleration due to gravity the riders need to be forced downwards by contact force with the seats.