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What is the difference between mass and weight?
Mass and Weight: Difference
The mass of an object is the amount of the substance in it and the weight of an object is the force of attraction on it by the earth. Mass is represented by the magnitude only while the weight is represented by magnitude as well as by the direction, Mass is a scalar quantity since it is shown by the magnitude only while weight is a vector quantity since it is portrayed with direction as well as magnitude.
You are going to study here
- What is mass?
- What is weight?
- The difference between mass and weight.
- Related questions on mass and weight
What is mass?
The mass is the quantity of material in a body, the smallest particle atom of the matter contributes to the mass of an object, atoms are made of the electron, proton, and neutron, among these proton and neutron, contribute to the mass but recent theory shows that gibs boson which is an unstable particle which sums up the mass of proton and neutron.
What is weight?
The weight is the force of attraction by the earth on an object which acts on the mass of an object. Weight is a particular force that is directed toward the earth or acts perpendicular to the earth.
The universal law of gravitational force
The difference between mass and weight
| Mass | Weight |
| Mass is the amount of substance | Weight is the force exerted by the earth on an object |
| Mass is a scalar quantity | Weight is a vector quantity |
| For the representation of mass only magnitude is needed | The representation of weight magnitude as well as direction is needed |
| The S.I unit of mass is the kilogram | The S.I unit of weight is Newton |
| The mass is a constant quantity | The weight varies from one heavenly body to another heavenly body |
| Mass=Volume ×Density | Weight = Mass × Acceleration |
Questions based on Mass and Weight
Question1. The volume of an object is 5 cm³,if its density is 2g/cubic.cm, then find its mass.
Solution. The volume of the object,V = 5 cm³ and its density,Ρ = 2g/cubic.cm
Mass = Volume ×Density = 5 cm³× 2g/cubic.cm = 10 g
Therefore mass of the object is 10 g
Question2. The mass of an object is 10 g, find its weight on the earth.
Solutions: The mass of the object, M = 10 g=(10/1000)=0.01 Kg
The acceleration produced by the gravitational force of the earth is = 9.8 m/s²
Weight = Mass × Acceleration of the object = 0.01 Kg × 9.8 m/s² = 0.98 N
Therefore the weight of the object is 0.98 N
Question3. The weight of an object is 10 N on the earth, find its mass.
Solutions: The weight of the object, W = 10 N
The acceleration produced by the gravitational force of the earth is,g = 9.8 m/s²
W = Mg
10 N= M×9.8 m/s²
M = 10 N/9.8 m/s² = 1.02 Kg
Hence the mass of the object is 1.02 Kg
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