Welcome to Part 3 of our Gravitation series! In this video, we cover key concepts that are crucial for Class 9 students. Our expert faculty at Infinity Learn explains important topics with clarity, definitions, and examples to help you score better in Physics.
Gravitation is the force by which every object in the universe attracts every other object with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Topics Covered in This Video:
➜Acceleration Due to Gravity (g)
➤ Definition: The acceleration experienced by a body due to the gravitational pull of the Earth.
➤ Formula: g = 9.8 m/s² on the surface of the Earth.
➜Condition for Weightlessness
➤ Definition: A state in which a body experiences no net gravitational force and hence no weight.
➤ Example: Astronauts in a spacecraft orbiting the Earth feel weightless due to free fall.
➜To Calculate the Value of g
➤ Learn how the value of g is derived using Newton’s law of gravitation:
g = G × (M / R²)
Where:
G = Universal gravitational constant
M = Mass of the Earth
R = Radius of the Earth
Understand the concepts with simple explanations and real-life examples! Ideal for Class 9 students preparing for school exams and strengthening their Physics foundation.
FAQs
►What is gravitation class 9?
►What is acceleration due to gravity class 9th?
►What are the two conditions of weightlessness?
►How do you calculate the value of G Class 9?
✦gravitation class 9
✦acceleration due to gravity
✦condition for weightlessness
✦what is weightlessness in physics
✦calculate the value of g
✦to calculate the value of g class 9
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