Physics
Grade-10
Easy
Question
A motorcyclist rides in a vertical circle in a hollow sphere of radius 16 m. Find the minimum speed required so that he does not lose contact with the sphere at the highest point.
- 16 m/s
- 15.5 m/s
- 13 m/s
- 12.5 m/s
Hint:
The correct answer is: 12.5 m/s
Radius of the sphere , r = 16 m
Minimum speed, v = ?
At the highest point the centrifugal force and weight of the motorcyclist are equal in magnitude.
Minimum speed of the motorcycle = 12.52 m/s
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