Question

Tamsen and Vera imagine visiting another planet, planet X, whose gravitational acceleration, g_X, is different from that of Earth's. They envision a pendulum, whose period on Earth is 2.243 s, that is set in motion on planet X, and the period is measured to be 1.400 s. What is the ratio of g_X/g_Earth? Neglect any effects caused by air resistance.

A) gx/ge=

If the average density of planet X is equal to Earth's average density, ρ_E, what is the ratio of R_X/R_E, where R_Eis the mean radius of Earth? (Assume both planets are spherical.

B) Rx/Re=

Answer 1