Stretching Inside the Elevator
Classical Mechanics
Level
2
Inside the stationary elevator, Brilli back-bends without having either his head or his hands to touch the ground. He holds that position throughout the time.
Which of the given scenarios is more likely to happen on Brilli if the elevator accelerates upward?
Brilli's back will be bent more due to the exerted upward force.
Brilli will fall to the ground due to the exerted upward force.
Brilli's back will raise since the elevator travels upward.
There is no effect on Brilli.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
You're effectively increasing his density, but not his ability to bear the additional weight, so his back will likely bend. If it does bend, he might fall, but if he does not bend, then he will not fall, because his (stable) center of gravity remains the same. Since falling implies bending his back, but bending his back does not imply falling, bending his back is more likely.