Question

Calculate the mass of an object whose weight is 98 newton?

Answer 1

Step 1. Given data:

The weight of the object is $W=98\mathrm{N}$

Acceleration due to gravity is $g=9.8m/s^2$

The mass of the object is $m=?$

Step 2: Formula used

$$\begin{gathered} Weight=mass\times accelerationduetogravity \\ W=mg.........\left(1\right) \end{gathered}$$

Step 3. Calculating the mass

On, putting all the given values in equation (1), we get

$$\begin{gathered} \left(98N\right)=m\times (9.8m/s^2) \\ m=\frac{98N}{9.8m/s^2}=10kg \end{gathered}$$

Hence, the mass of the object is $10kg$.