Astrophysics & Planetary Mechanics

How much does 120 kg weigh on Mars?

⚔ Instant Calculated Answer

An object with a mass of 120 kg weighs 45.48 kg-force (446.4 Newtons) on the surface of Mars, which is 37.9% of its weight on Earth.

45.48 kg Primary Metric
446.4 N Secondary Metric

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

\[ F_g = m \cdot g = 120 \text{ kg} \times 3.72 \text{ m/s}^2 = 446.4 \text{ N} \implies W_{kgf} = 45.48 \text{ kg} \]
Weight = 120 kg * 3.72 m/s^2 = 446.4 N = 45.48 kg-force
  1. Identify local surface gravitational acceleration on Mars: g = 3.72 m/s² (Earth g = 9.807 m/s²).
  2. Compute gravitational force in Newtons: F = m Ɨ g = 120 kg Ɨ 3.72 m/s² = 446.4 N.
  3. Compute apparent weight in kg-force relative to Earth scales: 120 Ɨ (3.72 / 9.807) = 45.48 kg.
  4. Compare to escape velocity on Mars: v_esc = 5.03 km/s.

šŸ“Š Nearby Parameter Reference Table

Earth Mass Weight on Mars (kg) Force on Mars (N) % Earth Weight
100 kg 37.9 kg 372.0 N 37.9%
110 kg 41.7 kg 409.2 N 37.9%
120 kg 45.5 kg 446.4 N 37.9%
130 kg 49.3 kg 483.6 N 37.9%
140 kg 53.1 kg 520.8 N 37.9%
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