An unmanned probe lands on Mars and reports that a certain rock on the Martian surface exerts a force of 37N on the probe’s built-in spring balance. The acceleration due to gravity on Mars is gMars=3.7m/s2. Using this information, answer the following:
(i) Calculate the mass of the rock.
(ii) Determine what the rock would weigh on Earth where g=9.8m/s2.
(iii) Would the mass of the rock be different on Earth? Justify your answer briefly.