Question

The weight of a body on earth 60 N. It masses on the moon will be:

• A. $10$ kg
• B. $60/9.8$kg
• C. $(60/10)\times 9.8kg$
• D. $(12\times 6)/9.8N$

Answer 1

The correct option is B

$60/9.8$kg

Step 1: Given that

Weight of the body on earth,$W_{}=60N$

mass of the object, m =?

Step 2: Formula used

$$\begin{gathered} Weight=mass\times accelerationduetogravity \\ W=m\times g \end{gathered}$$

here g is the acceleration due to gravity and on earth, $g=9.8m.s^{-2}$.

So,$m=\frac{W}{g}$

Step 3: Finding the mass of the object

$$\begin{gathered} m=\frac{W}{g} \\ m=\frac{60}{9.8}kg \end{gathered}$$

Mass on the moon

1. Mass is the total amount of matter.

2. It will remain the same irrespective of the planet.

3. Mass of the body on the moon will be $\frac{60}{9.8}kg$.

Hence, option (b) is correct.