The empty tray of an inertial balance oscillates with a time‐period T0. When a known mass m1 is firmly attached, the period becomes T1.
(a) Starting from the condition for simple harmonic motion, derive an expression for the mass M of the empty tray in terms of m1, T0 and T1.
(b) In an experiment the values are: T0=0.40s, T1=0.60s and m1=0.200kg. Calculate the mass of the tray.