Rings of dust and icy particles are found around which planets? a. all planets which have moons associated with them b. only saturn c. all for terrestrial planets d. all four jovian planets.

d. all four jovian planets.

Explanation:

The Jovian planets are as follows -

URANUS , SATURN , JUPITER, and NEPTUNE .  

All these four jovian planets are having the rings , and the rings are made up of infinite number of small pieces of the ice and the rock .

Hence ,  

These planets are comparatively small and dense cores surrounded by massive layers of gas .

you have to draw the persons position over there

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more