Question

the mass of an object on the surface of earth is 30 kg what will be its mass and weight in the interplanetary space​

Answer 1

It's mass will be 30kg

Why 30kg?

Because mass remain unchanged in whole universe. The thing which varies place to place is weight.

Answer 2

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Explanation:

What will be my weight in each planet when it is 30 kg on earth?

Weight on earth = 30kg

Weight = Mass × g

Mass = weight/ g

= 30/9.81 = 3.06

Weight on mercury = 3.06 × 3.7

= 11.322 kg

Weight on venus = 3.06 × 8.87

= 27.14 kg

Weight on mars = 3.06 × 3.711

= 11.36 kg

Weight on jupiter = 3.06 × 24.79

= 75.86 kg

Weight on saturn = 3.06 × 10.44

= 31.95 kg

Weight on uranus = 3.06 × 8.87

= 27.14 kg

Weight on neptune = 3.06 × 11.15

= 34.12 kg