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An object weighs $294 N$ on the earth. What would be its mass on the moon?

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60 kg

20 kg

10 kg

30 kg

answer is D.

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Detailed Solution

Its mass on the moon will be

30 kg

.
Given data and assumptions:
Weight of the object on the earth

W_{e} = 294 N

Let the mass of the object on the earth,

{= m}_{e}

Acceleration due to gravity on the earth,

g_{e} = 9.8 m / s^{2}

We know,

W_{e} = m_{e} \times g_{e}

294 N = m_{e} \times 9.8

m_{e} = \frac{294}{9.8}

m_{e} = 30 kg

Thus, mass of the object on the earth is

30 kg

. We know that the mass of a body remains constant everywhere in the universe. So, the mass of the object on the surface of moon will be

30 kg

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