Physics
Grade-10
Easy
Question
A motorcyclist rides in a vertical circle in a hollow sphere of radius 14 m. Find the minimum speed required so that he does not lose contact with the sphere at the highest point.
- 12 m/s
- 14 m/s
- 11 m/s
- 16 m/s
Hint:
The correct answer is: 12 m/s
Radius of the sphere, r = 14m
Minimum speed, v = ?
At the highest point the centrifugal force and weight of the motorcyclist are equal in magnitude.
Minimum speed of the motorcycle = 11.2m/s
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