Question

A spring balance is used to find the weight of a body X on the surface of the
moon. The mass of the body X is 2 kg and its weight is recorded as 3.4 N. The
weight of another body Y recorded by the same balance is found to be 765 N.
Calculate the mass of the body Y.​

Answer 1

450 kg Is the mass of body Y.

Explanation:

Body X data on the moon

Mass ( m ) = 2 kg

Weight ( W ) = 3.4 N

We know that,

Weight on the Moon can be expressed as,

W = m g moon …….( 1 )

Here,

g moon = W / m

= 3.4 / 2

= 1.7 m/s²

Body Y data on the moon

Weight ( W ) = 765 N

Again from eqn (1),

Mass of Y = W / g moon

= 765 / 1.7

= 450 kg