AIPMT PRELIMS2008Physics-Circular Motion
AIPMT PRELIMS 2008 Physics Centripetal Force MCQ Question
Type: MCQ-numerical-Medium-Class 11
A roller coaster is designed such that riders experience 'weightlessness' as they go round the top of a hill whose radius of curvature is 20m. The speed of the car at the top of the hill is between -
A
16 m/s and 17 m/s
B
13 m/s and 14 m/s
C
14 m/s and 15 m/s
D
15 m/s and 16 m/s
Correct Answer
Option C
Detailed Explanation
Weightlessness occurs when the normal force is zero. At the top of the hill, centripetal force equals gravitational force, allowing calculation of speed.
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