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What is mass and weight ? |
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Answer» Mass ➡️▪︎The mass of a BODY is the quantity of matter contained in it. ▪︎Mass is a scalar quantity which has only magnitude but no direction.▪︎Mass of a body ALWAYS remains constant and does not change from place to place.▪︎SI unit of mass is kilogram (kg).▪︎Mass of a body can never be ZERO.Weight ➡️ ▪︎The force with which an object is attracted towards the centre of the earth, is called the weight of the object.Now, Force = m × aBut in case of earth, a = g∴ F = m × gBut the force of attraction of earth on an object is called its weight (W).∴ W = mg▪︎As weight always ACTS vertically downwards, therefore, weight has both magnitude and direction and thus it is a vector quantity.•The weight of a body changes from place to place, DEPENDING on mass of object.•The SI unit of weight is Newton.•Weight of the object becomes zero if g is zero._____❣ |
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