- - - Department of Education in Science & Mathematics, Regional Institute of Education (NCERT), Ajmer ۳۰۵ ۰۰۴, India

The dynamical behaviour of the forced escape oscillator, which depends on the parameter values we considered, have been studied numerically using the techniques of phase portraits and Poincar'{e} sections. Also, we employed perturbation methods such as Lindstedt's method to obtain the frequency-amplitude relation of escape oscillator.

Escape oscillator, Perturbation analysis, Lindstedt's method