Question

The gravitational force on the lunar surface is approximately 1/6 times that of the Earth. (g-10 ms-2). If an object of mass 12 kg in earth is taken to the surface of the Moon, what will be its weight at the moon's surface?

• A. 12 N
• B. 20 N
• C. 120 N
• D. 2N

Answer 1

Answer:

B. 20 N

To find the weight of the object on the Moon's surface:

Weight on Earth = mass x acceleration due to gravity (g)
= 12 kg x 10 m/s^2
= 120 N

Since the gravitational force on the Moon's surface is 1/6 of that on Earth:

Weight on Moon = (1/6) x Weight on Earth
= (1/6) x 120 N
= 20 N

The final answer is indeed: 20 N