Post Views: 470 MEASUREMENT IN PHYSICS CONTENT: Measurement of area and volume Concept & measurement of time and ways of measuring time. Sub-Topic 1: MEASUREMENT OF VOLUME Volume of liquid objects is measured using instruments such as cylinder, burette, pipette, eureka can, etc. For regular solid objects, their volume could be determined using their …
Post Views: 308 Position, Distance and Displacement Concept of position, Concept of distance and displacement Distinction between distance and displacement. Sub-Topic 1: CONCEPT OF POSITION The position of an object is its location in space. It is usually expressed in relation to a reference point. To locate an object in space, a co-ordinate system …
Post Views: 358 MEASUREMENT IN PHYSICS (CONT) CONTENT: Measurement of area and volume Concept & measurement of time and ways of measuring time. Sub-Topic 1: MEASUREMENT OF VOLUME Volume of liquid objects is measured using instruments such as cylinder, burette, pipette, eureka can, etc. For regular solid objects, their volume could be determined using …
Length is measured using the following instruments.
(a). Metre Rule: A metre rule is a measuring device calibrated in centimetres (cm) with a range of 0 – 100cm. In using the metre rule, the eye must be fixed vertically on the calibration to avoid parallax errors.The smallest reading that can be obtained on a metre rule is 0.1cm (0.01cm).
(b). Callipers:these are used in conjunction with metre rule for measuring diameter of tubes, thickness of sheet, etc. The callipers are of two types –
The external calliper and
The internal calliper.
Fundamental quantities are physical quantities whose dimensions and units are not usually derived from other physical quantities. Basically, there are three fundamental quantities in mechanics. They include:
i) Mass: This is a fundamental quantity with dimension ‘M’, usually written in capital letter. The S.I. unit of mass is kilogramme (kg). Mass can also be measured in gramme (g), tonne (t), etc.
ii) Length: This is another fundamental quantity with dimension ‘L’, written in capital letter. The S.I. unit of length is metre (m). Length can also be measured in kilometre (km), centimetre (cm), inches (inch), feet (ft), etc.
Post Views: 359 INTRODUCTION TO PHYSICS CONTENT: Definition & Importance of Physics. Aspects/Career in Physics. Branches of physics. Sub-Topic 1: DEFINITION OF PHYSICS The word ‘’PHYSICS’’ originates from the Greek word, ‘’PHYSIS’’, which means nature and natural characteristics. Physics as a body of scientific knowledge, deals with the study of events in the universe, …