a 1 kg emery stone measuring 20 cm redium, is rotating with an angular speed of 39 revolutions per minute, when the motor is turned off. What tangent force is applied to the wheel so that it stops at 10 revolutions. a. 12,24 Rand/s b. 13,24 Rand/s c. 10,4 Rand/s d. 124 Rand/s
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