The same sample weighs 15 N on planet P and 24 N on planet Q. The gravitational field strength on P is 2.5 N kg−12.5\ \mathrm{N\,kg^{-1}}2.5 Nkg−1. What is the field strength on Q?
4.0 N kg−14.0\ \mathrm{N\,kg^{-1}}4.0 Nkg−1
9.6 N kg−19.6\ \mathrm{N\,kg^{-1}}9.6 Nkg−1
6.0 N kg−16.0\ \mathrm{N\,kg^{-1}}6.0 Nkg−1
1.56 N kg−11.56\ \mathrm{N\,kg^{-1}}1.56 Nkg−1