Physics-
General
Easy
Question
A ball is attached to a horizontal cord of length L whose other end is fixed a peg is located at a distance h (= 4L/5) directly below the point of attachment of the cord. What will be the speed of the ball when it reaches the top of its circular path about the peg?
- (0.3gL)1/2
- (2gL)1/2
- (1.5gL)1/2
- ( 1.2gL)1/2
The correct answer is: ( 1.2gL)1/2
Conservation of energy 
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