Question

on a given planet the weight of an object varies directly with the mass of an object. suppose that an object whose mass is 10 kg and weighs 20 N . find the way of an object whose mass is 6 kg

Answer 1

First we make the relation between values

an object whose mass is 10 kg and weight is 20 N

and an object whose mass is 6 kg​ and the weight the missing value X

$\begin{gathered} 10\longrightarrow20 \\ 6\longrightarrow x \end{gathered}$

now we can use cross multiplication to find the value of x

x is the multiplication of the diagonal numbers (6 and 20) dividing between 10

$\begin{gathered} x=\frac{6\times20}{10} \\ \\ x=12 \end{gathered}$

the weight of the object is 12N