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A solid sphere rolls on a smooth horizon...

A solid sphere rolls on a smooth horizontal surface at `10 m//s` and then rolls up a smooth inclined plane of inclination `30^@` with horizontal. The mass of the sphere is `2 kg`. Find the height attained by the sphere before it stops (in `m`).

A

`700 cm`

B

`701 cm`

C

`7.1 cm`

D

`70 cm`

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