Question

A planet has mass and radius 1/3 of those of earth. Calculate the acceleration due to gravity of the planet and compare it with acceleration due to gravity on earth. If an object has 5 kg mass on earth. Calculate its weight on the planet.

Answer 1

Answer:

A planet has mass and radius 1/3 of those of earth.

The acceleration due to gravity of the planet 9 times acceleration due to gravity on earth.

If an object has 5 kg mass on earth.

its weight on the planet is,

$weight \: on \: planet \: = 9 \times 5 = 45 \: kg$