Object c has a mass of 3,600 kilograms. object d has a mass of 900 kilograms. both objects were placed on different planets so that their weights are equal. the gravity acting on object c is times the gravity acting on object d.

1/4

Explanation:

The weight of an object is given by:

where m is the mass of the object and g is the acceleration due to gravity on the planet.

We are told that object C and object D have same weight, so we can write:

where:

is the mass of object C

is the mass of object D

We can re-arrange the equation to find a relationship between the gravity acting on object C and the gravity acting on object D:

So, the gravity acting on object C is 1/4 times the gravity acting on object D.

a and b sometimes have a positive value