The gravitational force exerted on an object depends on the mass of the object and the gravitational acceleration at the location. On Earth, the gravitational acceleration is approximately 9.8 meters per second squared (m/s²).
The Moon has a significantly lower gravitational acceleration than Earth. It is approximately 1/6th of Earth's gravitational acceleration, or about 1.6 m/s².
To calculate the weight of a person on the Moon, you can use the formula:
Weight on the Moon = (Weight on Earth) × (Moon's gravitational acceleration / Earth's gravitational acceleration)
Using the given weight of 30 kg on Earth, we can calculate the weight on the Moon:
Weight on the Moon = 30 kg × (1.6 m/s² / 9.8 m/s²)
Weight on the Moon ≈ 4.84 kg
Therefore, a person weighing 30 kg on Earth would weigh approximately 4.84 kg on the Moon.