A planet has twice the mass of Earth but the same radius
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A planet has twice the mass of Earth but the same radius. Calculate (i) the value of the acceleration due to gravity on the planet, and (ii) the time taken by a stone, released from rest, to fall vertically through a distance of 20m on its surface.
(Take gE=9.8m/s2.)