hello please answer :

the mass of the string as (2.0 0.2) g and its total length as (1.85 0.01) m. The segment of the string between the vibrator and the pulley has a length of (0.985 0.002) m (see Figure 2) and the rest hangs on the other side of the pulley and holds the platform with the masses.

L Poulie Corde Vibreur Masse suspendue Fig. 2 - Installation for inducing vibrations in a string under tension