Question

A body of mass 0.2 kg is attached to a light string of length 1 m and revolved in a vertical circle. What is the minimum speed at the lowest point so that the body can complete the circular motion? (Take \( g = 10 \, \text{m/s}^2 \))

• A. 2 m/s
• B. 3.16 m/s
• C. 5 m/s
• D. 6.32 m/s

Hint:

Remember: When applying energy principles, the minimum speed corresponds to the condition when the tension in the string is zero at the lowest point.