Hello please answer and explain :

The spring is weighed and a mass of (154.5 0.5) g is measured. The conical spring is attached vertically to a metal rod to which we attach a hook with a platform. This platform allows us to pile up discs which change the force applied to the spring by gravity. A long ruler is also attached to the rod which allows us to measure the position of the platform, the position increasing downwards. Figure 1 shows the setup with the spring, the platform, the ruler, and the disks

Note: For all questions, assume that the acceleration due to gravity is g= 9.8 m/s2 without uncertainty.

\fTable 1- Equilibrium position and number of oscillations per minute for different masses suspended from 3 Position of # of the platform oscillation per (cm) i 0.3 cm \fData Set Position Force 90 (cm) (N) 0. 50372 31. 1 1. 48176 42.8 2. 4598 55.3 Linear Fit for: Data Set | Force appliquee 3. 4472 66.8 Force appliquee = mx+b 4. 42176 77. 1 m (Slope): 11.65 +/- 0.1802 N/cm 3 6 0 V O U A W N - 5. 40568 88. 2 b (Y-Intercept): 25.80 +/- 0.6118 N Correlation: 0.9995 RMSE: 0.7392 N 70 Force appliquee (N) O 23 24 25 26 50 IN 28 29 30 32 33 34 35 36 37 38 39 30 4 40 2 41 0 Position de la plateforme (cm) (4x:4.902 Ay:0.0)