A rock of mass 7 kg is being whirled in a horizontal circle on the end of a rope 2.5m long. if the tangential speed of the rock is 2.3m/s, what is the tension in the rope?
The tension in the rock, which consists of 7 kg when being whirled, would come to about 5.7 m/s if the equation would be correctly and sufficiently for the appropriate answer.
