Question

What is the weight of a box that has a mass of 72.8 kg if it were placed of the Moon, whose gravitational attraction is 0.17 times that of the Earth?

Answer 1

The weight W of an object with mass m at a surface of a body whose gravitational acceleration is g is given by:

$W=mg$

Replace m=72.8kg and g=0.19*9.81m/s^2 to find the weight of the box on the surface of the Moon:

$W=(72.8kg)(0.17\times9.81\frac{m}{s^2})=121.40856N\approx121N$

Therefore, the weight of a 72.8kg box on the surface of the Moon is approximately 121 Newtons.