A student investigates the forces supporting a metre ruler to determine the weight of the metre ruler. He uses the apparatus shown in Fig. 1.1. The scale of the metre ruler faces upwards. Fig. 1.1 （d）From your graph，determine $$\(F_{0}\)$$ ，the value of $$\(F_{\mathrm{X}}\)$$ when $$\(d=0.0 \mathrm{~cm}\)$$ ． $$\[ F_{0}= \]$$ Calculate the weight $$\(W_{R}\)$$ of the metre ruler，using the equation $$\(W_{R}=2 \times F_{0}\)$$ ． $$\[ W_{R}= \]$$ ........................................................ N ［2］

Answer:

Knowledge points:

Solution: