A meter stick is found to balance at the 47.3cm mark when placed on a fulcrum. When a 45.7g mass is attached at the 10.5cm mark, the fulcrum must be moved to the 38.5cm mark for balance. What is the mass of the meter stick?

Answer 1

The mass of meter stick= 151.77g but with 3 sig figs it's roughly 152grams

(47.7g)*(38.5cm-10.5cm)=(47.3cm-38.5cm)*(Mass of meter stick)

Simple algebra given the information, hope this helps!