Question

Solve numarical examples.
The masses of two bodies are measured
to be 15.7 + 0.2 kg and 27.3 + 0.3 kg.
What is the total mass of the two and the
error in it?​

Answer 1

Answer:

Total mass of two bodies (Z) = 43.0 kg

Total error (±Z) = (±A) + (±B) = ±0.5 kg

Explanation:

Suppose masses of two bodies are A and B,

i.e. ( A±A)= (15.7±0.2) kg

(B±B)=(27.3±0.3) kg

Total masses of bodiez (Z) = Mass of A + Mass of B

= (15.7) + ( 27.3)

= 43.0 kg

Total error (±Z) = (±A) + (±B(

= ± (0.2) + (0.3) kg

= ± 0.5 kg