Question

Calculate the weight of an object if its mass on Earth is 30 kg.

Answer 1

Explanation:

As weight is a force therefore weight = ma but here acceleration is replaced by acceleration due to gravity of specific body of which weight is required cause the force which is exerted on us is only due to acceleration created by the gravitational force of that specific body so it's replace by g(acceleration due to gravity) hence finalized formula is weight=mxg

Now as you know, Weight = mass X acceleration due to gravity of earth

Hence your

weight=30X9.8=294N

Now if concerned with moon it has less gravitational force compared to earth your weight will be decreased but the mass will remain constant

acceleration due to gravity of moon is 1.6 m/s^2

Hence again using weight formule i.e weight =mg

Hence your weight on moon will be

weight=30X1.6=48N

Answer 2

Answer:

Mass on earth = 30 kg

W on earth = ?

W = mg

= 30 * 9.8

= 294 N

Weight on moon = 1/6 of the weight on earth

Therefore,

W on moon = 1/6 * 294

= 49 N