Formula to Find Weight
Before learning the formula to find weight, let us recall what is weight. Weight is a force experienced by any mass due to gravity. Newton is the SI unit of weight. W is used to denote weight. Weight may vary depending upon the force of gravity experienced by the body. Formula to find weight can be used to find the exact weight of the body on a particular field of gravity.
What Is the Formula to Find Weight?
The weight of an object is the product of its mass and the acceleration due to gravity. The basic formulas to find the weight is:
W = mg
where,
 W is the weight of the object
 m is the mass of the object
 g is the acceleration due to gravity. On the earth, the value of g is 9.8 m/s^{2}.
Let us the applications of the formula to find weight in the following section.
Solved Examples Using Formula to Find Weight

Example 1: Find the weight of the body if the mass of the body is 50 kg. Use g = 9.8 m/s^{2}.
Solution:
To find: Weight of the body.
Mass = 50 kg (given)
Using the formula to find weight,
W = mg
W = 50 × 9.8
W = 490 N
Answer: The weight of the body is 490 N

Example 2: If the weight of the body on the moon is 500N, find its mass. The value of g in the moon is 1.62 m/s^{2}.
Solution:
To find: Mass of the body.
Weight of the body on the moon = 500 N (given)
Using the formula to find weight,
W = mg
Mass of the body = W/g
Mass of the body = 500/1.62
Mass of the body = 308.64 kg
Answer: Mass of the body is 308.64 kg