What is the mass of an object whose weight is 98 N on Earth and also find its weight on moon?

Weight of the body on Earth = 98 N.

Acceleration due to gravity on Earth = 9.8 m/s2.

Let 'm' be the mass of the body on Earth.

m = W/g

m = (98/9.8) = 10 kg

Thus, the mass of the body is 10 kg, which always remains constant.

(a) Mass on moon = mass on Earth = 10 kg

(b) Let weight on moon is W'.

W' = mass × acceleration due to gravity on the Moon.

[Given, acceleration due to gravity on the Moon = 1.6 m/s2]

W' = 10 × 1.6 =16 N.