Astrophysics & Planetary Mechanics

How much does 120 kg weigh on The Moon?

⚔ Instant Calculated Answer

An object with a mass of 120 kg weighs 19.8 kg-force (194.4 Newtons) on the surface of The Moon, which is 16.5% of its weight on Earth.

19.8 kg Primary Metric
194.4 N Secondary Metric

šŸ“ Mathematical Formula & Step-by-Step Substitution

\[ F_g = m \cdot g = 120 \text{ kg} \times 1.62 \text{ m/s}^2 = 194.4 \text{ N} \implies W_{kgf} = 19.8 \text{ kg} \]
Weight = 120 kg * 1.62 m/s^2 = 194.4 N = 19.8 kg-force
  1. Identify local surface gravitational acceleration on The Moon: g = 1.62 m/s² (Earth g = 9.807 m/s²).
  2. Compute gravitational force in Newtons: F = m Ɨ g = 120 kg Ɨ 1.62 m/s² = 194.4 N.
  3. Compute apparent weight in kg-force relative to Earth scales: 120 Ɨ (1.62 / 9.807) = 19.8 kg.
  4. Compare to escape velocity on The Moon: v_esc = 2.38 km/s.

šŸ“Š Nearby Parameter Reference Table

Earth Mass Weight on The Moon (kg) Force on The Moon (N) % Earth Weight
100 kg 16.5 kg 162.0 N 16.5%
110 kg 18.2 kg 178.2 N 16.5%
120 kg 19.8 kg 194.4 N 16.5%
130 kg 21.4 kg 210.6 N 16.5%
140 kg 23.1 kg 226.8 N 16.5%
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