Physics Olympiad #014 [The Speed of Block at Certain Angle]

Look at the image below. A mass m is placed on a smooth table. This mass is connected to a rope passing through a pulley and connecting to mass M. The vertical distance of mass m to the pulley is h. Ignore the mass of the pulley and assume there is no friction on the pulley. The initial angle θ is θ zero. Calculate the speed of mass m when m is at Be. Calculate the speed of the mass m when the angle θ is equal to 0°.

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