- #1
Delzac
- 389
- 0
Hi all,
A roller-coaster train is upside down when it is at the top of a circular vertical structure which is 20 m high. In order to get to the top without falling out, the velocity of the roller-coaster train at the top of the circle has to be more than
a 25 m s-1
b 14 m s-1
c 9.9 m s-1
d zero
Ans : C
The question didn't give me any mass of anything at all to work with except for height. Is mass not required for this question? i couldn't get C, in fact i chose D, zero instead.
Any help will be greatly appreciated. ( probably need clarification of concepts.)
A roller-coaster train is upside down when it is at the top of a circular vertical structure which is 20 m high. In order to get to the top without falling out, the velocity of the roller-coaster train at the top of the circle has to be more than
a 25 m s-1
b 14 m s-1
c 9.9 m s-1
d zero
Ans : C
The question didn't give me any mass of anything at all to work with except for height. Is mass not required for this question? i couldn't get C, in fact i chose D, zero instead.
Any help will be greatly appreciated. ( probably need clarification of concepts.)