A ball mill of 1.8 m diameter is loaded with steel balls each having a diameter of 6 cm. The
rotational speed of the ball is kept at 75% of the critical speed. The operational speed of the ball
mill in rpm is _____.
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Newton's second law of motionpertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
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