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There is an inclined surface of inclinat...

There is an inclined surface of inclination `theta`. A smooth groove is cut into it forming an angle `alpha` with AB as shown in figure. A steel ball is free to slide a long the groove. If the ball is released from the point O. Find the speed when it comes to A.

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The correct Answer is:
`[sqrt(2gl sin theta sin alpha)]`
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PHYSICS GALAXY - ASHISH ARORA-KINEMATICS-Unsolved Numerical Pro.
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