filmov
tv
Class 9 Physics Chapter 10 | Mass and Weight - Gravitation

Показать описание
===============================================
✅ In this video,
✔️ Class: 9th
✔️ Subject: Physics
✔️ Chapter: Gravitation (Chapter 10)
✔️ Topic Name: Mass and Weight
✔️ Topics Covered in This Video: Chapter 10 Gravitation - Mass and Weight
===============================================
00:00 Introduction
00:19 Mass & Weight: Mass
07:00 Mass & Weight: Weight
18:37 Website Overview
==============================================
Why study from Magnet Brains?
Magnet Brains is an online education platform that helps give You NCERT/CBSE curriculum based free full courses from Kindergarten to Class 12th so that you can perform well in any and all exams you give in your academic career.
👉 Contact us 🤑🤑
Mass and Weight
Mass
- Mass of a body is the quantity of matter (or material) contained in it.
- It is a scalar quantity which has only magnitude but no direction.
- SI unit is kg.
- The mass of a body is constant and does not change from place to place.
- The mass of a body cannot be zero.
Weight
- The weight of a body is the force with which it is attracted towards the centre of the earth.
F = GMm
- By Newton’s second law of motion,
Force = mass x acceleration
Force = m x g
- By definition, weight = m x g
- S.I. unit of weight is Newton (N).
- Weight is a vector quantity.
- The weight of a body acts in vertically downward direction.
- Weight depends on g therefore, weight of a body is not constant. .
Комментарии