is rollercoaster works on principle of centripetal force concept??

Question

the people are not falling down by gravitational force when it goes up?? is it centripetal or centrifugal force??

Answer 1

Centripetal.

Most people have heard of centripetal and centrifugal force. Though it may be somewhat difficult to keep track of which is which, chances are anyone who has heard of the two concepts remembers that one is the tendency of objects in rotation to move inward, and the other is the tendency of rotating objects to move outward. It may come as a surprise, then, to learn that there is no such thing, strictly speaking, as centrifugal (outward) force. There is only centripetal (inward) force and the inertia that makes objects in rotation under certain situations move outward, for example, a car making a turn, the movement of a roller coaster—even the spinning of a centrifuge.

Answer 2

The centripetal force is applied by the roller coaster to the car as it rides up the loop. This force is directed towards the center of the loop. This is why you feel pushed into your seat as you enter the loop. The fact is that people *are* falling down as the car rides up - but it is decelerating due to gravity, and after it reaches the apex of the loop, it is indeed falling down and regaining more acceleration. It's just that the car is moving fast enough so that the car doesn't fall off the tracks. If the car is not moving fast enough, the car might reach the loop's apex and flip over/get stuck, but coasters are designed to be going fast enough into a loop so that doesn't happen. The bigger the loop, the faster the car needs to be moving in order for it to stay on the tracks.

Answer 3

centripetal force=mv^2/r so 1) yes 2) no 3) no (four times) 4) yes 5) no 6) no

Answer 4

yes