1. Fishing company, Fin-tastic Rods, are designing a new fishing pole. They set up a model as shown in the diagram below to consider the forces involved in catching a fish.

Explain what effect the following assumptions would have on the model described above and whether or not they are suitable.

(i) The fishing line is inextensible and light.

(ii) The fishing pole is a light rod.

(iii) The fish is modelled as a particle.