Hooke's Law and Spring ConstantPlease help with part 1. I hope this is clear enough

Masses and Springs (colorado.edu) Click on the 'Energy' Tab. Complete all Four Parts: F = mg = k(x-xo) . . . . . . . . . Masses and Sponge PHET : Part 1: Find the value of the Spring Constant, k Set up as above: Note the natural length of the spring (marked by the dotted line) Set the Spring Constant as shown Gravity - Earth Damping - 0 When a weight is attached to the spring, the green arrow represents the Displacement or stretching of the spring (X-Xo). (i) For 8 masses between a range of 50g to 300 g, measure X-Xo (ii) Convert the mass from g to kg and convert the length from cm to m (ill) Make a Data Table (Mass, X-Xo, Force (mass x g) (ifi) Plot Force (m.g) on y-axis versus X-Xo on x-axis. Include Title, labels and units (note g is the acceleration due to gravity on Earth) (iv) Get the value of k from the slope of the graph, Unit (N/m) 11 -O LI O Masses and Springs PHET