The weight of an object on the surface of Earth is 60 N. On the surface of the Moon, its weight will be

  1. 10 N
  2. 30 N
  3. 60 N
  4. 360 N

Answer (Detailed Solution Below)

Option 1 : 10 N
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Detailed Solution

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Concept:

  • As the mass of the moon is 1/100 times the mass of Earth and the radius of the moon is ¼ times the radius of the Earth
  • As a result, the gravitational attraction on the moon is about one-sixth when compared to that of the Earth
  • The weight of an object depends on the value of acceleration due to gravity g
  • Hence the weight of an object on the moon is 1/6th of the weight on the Earth

Calculation:

Weight on Earth = mg = 60 × 9.8 N

Weight on Moon:

\({W_m} = \frac{1}{6}{W_E} = \frac{1}{6} \times 60 = 10 N \)

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