A sample is hung from a newtonmeter at location A, where the gravitational field strength is 4.0 N kg−14.0\ \mathrm{N\,kg^{-1}}4.0 Nkg−1. The newtonmeter reads 28 N.
The same sample is then hung from the newtonmeter at location B, where it reads 63 N.
What is the gravitational field strength at location B?
2.25 N kg−12.25\ \mathrm{N\,kg^{-1}}2.25 Nkg−1
9.0 N kg−19.0\ \mathrm{N\,kg^{-1}}9.0 Nkg−1
5.0 N kg−15.0\ \mathrm{N\,kg^{-1}}5.0 Nkg−1
15.75 N kg−115.75\ \mathrm{N\,kg^{-1}}15.75 Nkg−1