Do you feel heavier at the top of a roller coaster?
The normal force however has a small magnitude at the top of the loop (where the rider often feels weightless) and a large magnitude at the bottom of the loop (where the rider often feels heavy).
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At the top of the loop, the gravity force is directed inward and thus, there is no need for a large normal force in order to sustain the circular motion. The fact that a rider experiences a large force exerted by the seat upon her body when at the bottom of the loop is the explanation of why she feels heavy.
The same can be said for this phenomenon on roller coasters. “You feel very light at the top of loops, but heavier than usual at the bottom” (Boston University).
The centripetal acceleration always points towards the center of the circle. So at the bottom of the circle, the centripetal acceleration is pointing up, so riders feel heavier than their true weight. At the top of the circle, it is pointing down, so riders feel lighter than their true weight.
The normal force however has a small magnitude at the top of the loop (where the rider often feels weightless) and a large magnitude at the bottom of the loop (where the rider often feels heavy).
Roller coasters are generally designed to have non-zero but fairly small normal forces at the top, so a rider feels almost weightless. At the bottom of the loop, the apparent weight can be considerably larger than mg, so a rider feels much heavier than usual.
In a typical coaster design, the riders in the front car get an unobstructed view of all these obstacles whipping past them. In a coaster that has seats facing backward, the rear car offers the best of both worlds -- you get a great view and the most intense ride.
It's the combination of lift hill and drop that are the scary parts for me. The lift hill builds anticipation so well, and then it's time for the hyper coaster level 90 degree descent, the first part of which occurs in total darkness.
Other health conditions can make going on high-speed rides unsafe, including pregnancy, recent surgery, heart problems, high blood pressure and aneurysms, as well as the influence of drugs or alcohol.
“As far as an age limit, though, if you are physically healthy and up for the thrill, there is likely no greater risk for someone who is 60 than there is for someone who is 20.” The largest concern for those who indulge in roller coasters is the after effects.
As your coaster tops a hill, the front car will seem to hang over the edge, but the rear car will whip over much faster. The middle seats have the weakest ride in terms of view and speed but they'll give you everything the seats in the front and the back do at just a little less intensity.
A. Airtime – A favorite term for roller coaster enthusiasts! It's used to describe the feeling created by negative g-forces which gives riders the sensation of floating on a roller coaster. Airtime or negative g-forces are most commonly experienced on a drop or at the crest of hill.