Question

On earth the weight of a body of mass $1.0kg$ is $10N$. What will be the weight of a boy of mass $37kg$ in​
(a)kgf​
(b)N?​

Answer 1

Given , the weight of mass 1 kg body is 10N.
W = mg
$10N=1kg\times g$
$g=10Nk{g}^{-1}$

(a) 1 kgf is the force of attraction of the earth on the mass of 1 kg . Earth will attract the body of 37 kg with a force of 37 kgf .

(b) Given , Mass of the body (m) = 37 kg
To find, Weight (W)
$W=37kg\times 10Nk{g}^{-1}$
$=370N$.​