Question

Mass of an object is $7kg$. What is its weight on the earth?

Answer 1

Step 1: Given data:

Mass of an object, $m=7kg$

Acceleration due to gravity on the earth, $g=9.8m/s^2$.

Step 2: Calculating the weight:

$$\begin{gathered} Weight=Mass\times Acceleration\left(duetogravity\right) \\ W=m\times g \end{gathered}$$

Substituting $m=7kg$and $g=9.8m/s^2.$

$$\begin{gathered} W=7kg\times 9.8m/s^2 \\ W=68.6N \end{gathered}$$

Hence, the weight of the object is $68.8N$.