Question

Spring balance measures weight ,not the mass of a body.give reason

Answer 1

Answer:

spring balance shows F = 1/2 k x ^2 ( k = spring Constant and x is distance moved by needle)

k is independent of Gravity and so x shows Same mass as caliberated under a Force on Earth.

it will show Mg = 1/2 k X sqaure

x ( the reading ( of travel on scale) = Root ( 2Mg/k)

the reading changes on Moons , Jupiter and Saturn's or wherever g is different and Hence weight is Different