Question

What is the mass of an object whose weight is 196 N?

Answer 1

Given:

The weight of an object = 196 N.

Required to find:

The mass of the object

Solution:

1. The weight (W) of an object is given by W = mg, where m is the mass of the object and g is the acceleration due to gravity.
2. We know that the acceleration due to gravity (g) on earth is 9.8 ms^-2.
3. From given, W = 196 N.
4. Therefore,

$$\begin{gathered} mg=196N \\ \Rightarrow mx9.8=196N \\ \Rightarrow m=\frac{196}{9.8}=20kg. \end{gathered}$$

Hence, the mass of the object is 20 kgs.