  A lup-like cantilever beam are discussed in this work. For small deflection
it can be approximated as a spring-mass system with certain spring constant
whose effective mass is larger than the usual constant rectangular cross
section cantilever beam. A new parameter $\beta$ is introduced to relates some
the properties of lup-like cantilever beam to the usual one. Influence of beam
witdh $B_0$ and head width $B_t$ to value of $\beta$ is also presented.
