1.

A rigid body rotates about a fixed axis with variable angular velocity equal to alpha-betat, at time t where alpha, beta are constants. The angle through which it rotates before its stops:

Answer»

`(ALPHA^(2))/(2beta)`
`(alpha^(2)-BETA^(2))/(2ALPHA)`
`(alpha^(2)-beta^(2))/(2beta)`
`((alpha-beta)alpha)/(2)`

ANSWER :A


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