Are you sure you want to leave?

Your test is still in progress. If you leave this page or go back now, all your attempt wil not be saved.

The scale shown below was not calibrated properly. When there is no weight on the scale it is pointing as shown.

Apart from this, the scale works normally.

Two identical blocks are placed on the scale. The pointer makes less than a full turn.

What is the mass, in kg, of one of these blocks?