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A stone is tied at end of string and whi...

A stone is tied at end of string and whirled in horizontal plane with circular path of radius 20 cm. If its acceleration is 980 `cms^(-2)`, then what will be its angular speed ?

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Verified by Experts

Centripetal acceleration
`a_(c ) = (v^(2))/( r )`
`=r epsilon^(2) `
`epsilon = sqrt((a)/(r )) = sqrt((960)/( 20))`
`epsilon = sqrt(49) =7 (rad)/( s )`
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