Question

Define weight of a body.

Answer 1

1. Weight of a body is the force with which the body is attracted towards the center of the earth.

2. Mathematically it is represented as follows: $W=mg$

where, $W\to$weight of the body

$m\to$mass of the body

$g\to$acceleration due to gravity

3. So, basically weight is a force having both magnitude and direction. Hence it is a vector quantity.

4. The SI unit of weight is same as that of force which is newton $\left(N\right)$.

5. Since weight of a body depends on the value of $g$, weight is not a fundamental property of a body as it may have different values at different places. It is because value of $g$varies with location.