What is the size of the tray?

(1) Simple balance and pallet balance have similar steps when adjusting and weighing objects.

The difference between pallet balance and simple balance;

The pointer of the pallet balance points to the center of the dial, and the beam of the balance is balanced.

The arrangement of the weight lines of a simple balance shows the balance of the balance beam.

(2) Figure A lists the equation according to the lever balance condition.

In Figure B, 50g object is placed on the left board, and the equation is listed according to the lever balance condition.

Similarly, find the scale of 150g.

Uniform scale, marked with 100g and 200g scales.

To use a simple balance:

B.put the balance on a horizontal table.

A. Move the thin thread hanging the hook code to the 0 notch line. (This is equivalent to the code hovering back to zero)

D. Adjust the balance nut on the right side of the beam so that the weight line hanging on the beam is aligned with the mark on the base. (It is equivalent to moving the balance nut so that the pointer points to the center of the indexing plate. )

C place the object to be measured on the tray of the balance (equivalent to placing the object on the left tray).

E. Move the thin thread of the hook code so that the heavy hammer line hanging on the beam is aligned with the mark on the base (equivalent to adding or subtracting weights or moving the traveling code to rebalance the balance).

(3) Read the mass of the object according to the scale.