Questions
A roller coaster is designed such that riders experience "weightlessness" as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between :
detailed solution
Correct option is C
∵mv2R=mg∴v=Rg=20×10=200m/s= 14.14 m/sTalk to our academic expert!
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If R is the radius of earth, is its angular velocity and gp is the value of acceleration due to gravity at the poles, then effective value of acceleration due to gravity at the latitude will be equal to
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