ISRO Scientist or Engineer Refrigeration & Air-Conditioning 2013 Question 20

Question 20

A pendulum bob has a speed of 3 m/s while passing throughits lowest position, the speed of the bob when it makes an angle of $$60^\circ$$ with the vertical is: (Assume g = 10 m/sec$$^2$$ and Length of pendulum is 0.5 m):



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