A planet has mass 110 of that of earth, while radius is 13 that of earth. If a person can throw a stone on earth surface to a height of 90m, then he will be able to throw the stone on that planet to a height
100 m
Acceleration due to gravity g=GMR2 ∴ gplanetgearth=MplanetMearth(RearthRplanet)2=110×(31)2=910
If a stone is thrown with velocity u from the surface of the planet then maximum height
H=u22gHplanetHearth=gearthgplanet⇒Hplanet=109×Hearth=109×90=100 metre