Question

a object has 45 weight on earth what's on moon due to gravity

Answer 1

weight on moon is 7.5

Answer 2

W = mg.....

where g = Gravitational Acceleration
m = Mass os the Object


45 = m × 9.8

m = 45 / 9.8

m = 4.59

So, Weight on moon

W^ = m × g^

where g^ = gravitational acceleration of moon and
g^ = g/6

W^ = 4.59 × 9.8/ 6

W^ = 45 / 6

W^ = 7.5 N.

I done it by long method, because it can be asked in exam for 3 or 4 numbers.

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Hope it was helpful.