Two bodies mass (20+0.2)kg and (30+0.4)kg what is total mass of these bodies?
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While adding error in measurement should be added
So,
Total mass = (20 ± 0.2) kg + (30 ± 0.4) kg
= (20 + 30) kg ± (0.2 + 0.4) kg
= (50 ± 0.6) kg
∴ Total mass of the bodies is (50 ± 0.6) kg
So,
Total mass = (20 ± 0.2) kg + (30 ± 0.4) kg
= (20 + 30) kg ± (0.2 + 0.4) kg
= (50 ± 0.6) kg
∴ Total mass of the bodies is (50 ± 0.6) kg
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