Скачать или смотреть O Levels/IGCSE Physics: Mass, Weight, and Density | 1.3 Mass and Weight Explained (Urdu/Hindi)

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In this detailed lecture on O Levels and IGCSE Physics, we will dive into Mass, Weight, and Density as part of the 1.3 Mass and Weight topic. This video is explained in Urdu and Hindi to make it easier for students to understand and apply these concepts for their upcoming exams.

Key Topics Covered:
Mass and Weight: We define mass as a measure of the quantity of matter in an object, which remains constant regardless of location. Weight, on the other hand, depends on the gravitational field strength and varies with location.
Inertia: Learn about inertia, which is the property of mass that resists changes to its state of rest or motion. This concept is crucial for understanding how objects behave when acted upon by forces.
Comparing Masses and Weights: Understand how you can compare the mass and weight of objects using tools like a beam balance or equal-arm balance, which ensures that objects are compared based on their quantity of matter or gravitational pull.
Using an Electronic Balance: Learn the procedure for determining mass accurately using an electronic balance. We'll explain how this tool measures the mass in units like grams or kilograms.
Measuring Weight with a Force Meter: Discover how to measure an object’s weight using a force meter, and understand the difference between mass and weight in practical situations.
Gravitational Field Strength: Learn about gravitational field strength, which is defined as the force per unit mass. We'll use the equation:
Gravitational Field Strength (g) = Weight (W) / Mass (m)
This is also known as the acceleration due to gravity and is typically 9.8 m/s² on Earth.
Gravitational Field: We will explain that a gravitational field is a region in which any mass experiences a force due to gravitational attraction. This concept is essential for understanding how gravity works over distances.
This video is perfect for O Levels and IGCSE students looking to master the concepts of mass, weight, and gravitational fields. By the end of this video, you will have a solid understanding of these fundamental concepts in Physics.

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1.3 Mass and weight
1 State that mass is a measure of the quantity of matter in an object at rest relative to the observer
2 State that the mass of an object resists change from its state of rest or motion (inertia)
3 Know that weights, and therefore masses, may be compared using a beam balance or equal-arm balance
4 Describe how to determine mass using an electronic balance
5 Describe how to measure weight using a force meter
6 Define gravitational field strength as force per unit mass; recall and use the equation
gravitational field strength = weight mass
g = Wm
and know that this is equivalent to the acceleration of free fall
7 State that a gravitational field is a region in which a mass experiences a force due to gravitational attraction
1.4 Density
1 Define density as mass per unit volume; recall and use the equation
density = mass volume
ρ = mV
2 Describe how to determine the density of a liquid, of a regularly shaped solid and of an irregularly shaped
solid which sinks in a liquid (volume by displacement), including appropriate calculations