A 2 kg object is attached to a string of length 1.5 m and is moving in a circular path on a frictionless surface. If the tension in the string is 30 N, what is its speed?
Q1. A 2 kg object is attached to a string of length 1.5 m and is moving in a circular path on a frictionless surface. If the tension in the string is 30 N, what is its speed?
Answer: √(30 * 1.5 / 2) m/s
Explanation: Tension = mv² / r, so v² = Tr / m = (30 * 1.5) / 2, thus v = √(30 * 1.5 / 2) m/s.