1.

A solid sphere is rolling on a frictionless surface, shown in figure with a translational velocity `v m//s`. If it is to climb the inclined surface then `v` should be : A. `ge sqrt((10)/(7)gh)`B. `ge sqrt(2gh)`C. `2gh`D. `(10)/(7)gh`

Answer» `(1)/(2)mv^(2)(1+k^(2)//R^(2))=mgh`
`(1)/(2)mv^(2)(1+(2)/(5))=mgh`
`(7)/(10)mv^(2)=mgh`
`v=sqrt((10gh)/(7))`
`vgesqrt((10gh)/(7))`


Discussion

No Comment Found

Related InterviewSolutions