A vertical scale on a spring balance reads from 0 to 195 \rm{N}. The scale has a length of 11.5 \rm{cm} from the 0 to 195 \rm{N} reading.

A vertical scale on a spring balance reads from 0 to 195 rm{N}. The scale has a length of 11.5 rm{cm} from the 0 to 195 rm{N} reading. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.30 rm{Hz}. what is the m of the fish?