Question

Mass of an object is $20$kg. Find its weight on the surface of the earth and on the moon. (g of Earth $=10m{s}^{-2}$)

Answer 1

As we know a body's weight is the product of its mass and acceleration acting on it i.e

$W=ma$

given, $m=20kg$

here acceleration (a) would be $g=10m/s²$

{because on Earth a body experiences acceleration and due to gravity (g)}

so, weight of the body on Earth is

$W=20\times 10=200kg$

as we know,

weight on moon$=\frac{1}{6}$ weight on earth

so weight on moon$=\frac{200}{6}=33.33kg$