Figure 8 shows a bucket filled with water and tied to one end of a string which is used to whirl it in a vertical circular path with a uniform speed v.
- State two forces acting on the bucket at any instant.
- Explain why the tension is lowest at point A.
- The speed of the bucket is gradually reduced. Explain what is likely to be observed when the bucket is at point A.
- A stone of mass 40g is whirled at the end of a string in a horizontal circular path at (b) speed of 12ms-1. (The string and the stone are in the same horizontal plane). If the string is 1m long, determine the tension in the string. (3 marks)