An angler hangs a 4.52-kg fish from a vertical steel wire 1.65m long and 5.47×10?3cm2 in cross-sectional area. The upper end of the wire is securely fastened to a support.
1. Calculate the amount the wire is stretched by the hanging fish.
2. The angler now applies a force F? to the fish, pulling it very slowly downward by 0.525mm from its equilibrium position. For this downward motion, calculate the work done by gravity.
3. For this downward motion, calculate the work done by the force F? .
4. Calculate the work done by the force the wire exerts on the fish.
5. Calculate the the change in the elastic potential energy (the potential energy associated with the tensile stress in the wire).