Which of the following statements about a spring balance and/or a chemical balance is not correct?
A
the chemical balance operates on the principle of moments
B
the sprin balance operates on Hooke's law
C
either may be used to measure the weight of a substance
D
the reading of a spring balance changes over the surface of the earth, while that of the chemical balance remaind constant
Verified Correct Answer: C.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #34426)