When the 24kg bob is given a horizontal speed of 15 ms it be

When the 2.4-kg bob is given a horizontal speed of 1.5 m/s, it begins to rotate around the horizontal circular path A. The force F on the cord is increased, the bob rises and then rotates around the horizontal circular path B.

Part A

Determine the speed of the bob around path B.

Part B

Find the work done by force F.

Solution

From the above given data speed of the bob and work done can be calculatef as follows

speed of thebob= 32 m/se

work done = 66kj