Fig. 1.1 is a simplified diagram of a balance with equal arms.
A copper block of unknown mass is placed on the left-hand pan. Six standard masses, placed
on the right-hand pan, cause the balance to be in equilibrium, with the beam horizontal.
The six standard masses on the right-hand pan are:
100 g, 100 g, 50 g, 10 g, 5 g, 2 g
What is the mass of the copper block?
mass = ........................................... g