criminal justice essay.
October 17, 2020
A 200 g ball on a 60-{cm}-long string is swung in a vertical circle about a point 200 {cm} above the floor. The tension in the string when the ball…
October 17, 2020

“A penny of mass 3.10 g rests on a small 20.0‐g block supported by a spinning disk (Fig. P6.60). The coefficients of friction between block and disk are 0.750 (static) and 0.640 (kinetic) while those for the penny and block are 0.520 (static) and 0.450 (kinetic). What is the maximum rate of rotation in revolutions per minute that the disk can have, without the block or penny sliding on the disk? Figure P5.60”


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