Question

8. The weight of a body of mass 6.2kg on moon is
10 N. If a boy of mass 30 kg goes from earth to
the moon surface, what will be his (a) mass,
(b) weight?
Ans. (a) 30 kg, (b) 50 N​

Answer 1

Answer:

We know that

W = mg (symbols have their usual meanings)

10 = 6.2 * g ( of moon)

So g = 10/6.2 m/s²

Now m = 30 kg

g = 10/6.2

Again using

W = mg

W = 30 *10/ 6.2

= 48.38 N

We know that mass is independent of the value of g as it is a property of any material

Therefore mass = 30 kg

Explanation: