If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is
a. mg/2
b. mg
c. 2mg
d. 4mg

Option (C) is the correct answer.

Explanation:

The relation between mass and weight is as follows.

                 Weight = mass × g

where,    g= gravitational force =

For mass = 2m, calculate the weight as follows.

             Weight = mass × g

                          = 2m × g

                          = 2mg

This means that when mass of object becomes 2m then its weight will also become 2mg.

Therefore, we can conclude that if the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is 2mg.

3. dark matter

empty space could also be a simple vacuum