[PHY] Chapter 4 - Mass, Weight, Density

DARRELL ER (COPYRIGHTED) © TOPIC 4: MASS, WEIGHT, DENSITY DARRELL ER (COPYRIGHTED) ©

CHAPTER ANALYSIS THE ABOUT MASTERY EXAM WEIGHTAGE DARRELL ER (COPYRIGHTED) ©

MASS & WEIGHT GRAVITATIONAL FIELD DENSITY KEY CONCEPT DARRELL ER (COPYRIGHTED) ©

MASS & WEIGHT DARRELL ER (COPYRIGHTED) © Mass Weight Definition Mass is defined as the amount of substance in a body. Weight is a measure of the gravitational force acting on an object due to the gravitational field. SI Unit kg N Quantity Scalar quantity Vector quantity Formula --- W = mg Gravity Mass is constant & is not affected by gravity. Weight is dependent on the gravitational field. Measurement Beam Balance Lever Balance Electronic Balance Spring Balance

GRAVTITATIONAL FIELD Gravitational Field Gravitational field is a region of space where a body with mass will experience gravitational force due to gravitational attraction. Gravitational field strength, g, is defined as the gravitational force per unit mass. Formula: Weight = mg DARRELL ER (COPYRIGHTED) ©

DENSITY DARRELL ER (COPYRIGHTED) © Density Density is defined as mass per unit volume. (Unit: kgm-3) Conversion: Conversion tips: 1 gcm-3 = 1000 kgm-3 1 kgm-3 = 0.001 gcm-3

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