Question
What is mass? How is it measured?
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Answer
Mass is the quantity of matter present in any object. It can be measured as follows using a digital weighing balance:
- Switch on the digital balance.
- Observe the initial reading on the digital balance display.
- See that it is zero. If not, use the button to bring it to zero.
- Now, place a clean and dry watch glass on the pan.
- Note the reading on the digital balance; let it be A.
- Now, carefully place the solid object, such as a stone, on the watch glass.
- Note the reading displayed on the balance; let it be B.
- Mass of the stone = (B – A) g.
- The mass of a liquid may be measured by replacing the watch glass with a beaker and putting the liquid into it.
- Switch on the digital balance.
- Observe the initial reading on the digital balance display.
- See that it is zero. If not, use the button to bring it to zero.
- Now, place a clean and dry watch glass on the pan.
- Note the reading on the digital balance; let it be A.
- Now, carefully place the solid object, such as a stone, on the watch glass.
- Note the reading displayed on the balance; let it be B.
- Mass of the stone = (B – A) g.
- The mass of a liquid may be measured by replacing the watch glass with a beaker and putting the liquid into it.
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