a 50kg ball on the end of a string is whisled at a radius 5m . what is the work done by the constent force during one revolution ?
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A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when
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