Class_9_CBSE_Gravitation_Answers_Updated.pdf

Class 9 CBSE - Gravitational Chapter Answers 11. Define the following terms with SI units: - Gravitational force: The force of attraction between two objects due to their masses. SI Unit: Newton (N) - Acceleration due to gravity: The rate at which an object accelerates when...

Class 9 CBSE - Gravitational Chapter Answers 11. Define the following terms with SI units: - Gravitational force: The force of attraction between two objects due to their masses. SI Unit: Newton (N) - Acceleration due to gravity: The rate at which an object accelerates when falling freely under gravity. SI Unit: meters per second squared (m/s²) - Mass: The amount of matter in an object. SI Unit: kilogram (kg) - Weight: The force exerted on an object due to gravity (W = m * g). SI Unit: Newton (N) - Free fall: Motion of an object under gravity alone (no other forces). SI Unit: Not applicable (type of motion) - Universal gravitational constant: A constant (G) in the law of gravitation. SI Unit: Newton meter squared per kilogram squared (N·m²/kg²) 12. Distinguish between: - Universal Gravitational Constant (G) and Acceleration due to Gravity (g): G is universal with value 6.674x10^-11 N·m²/kg²; g is local, 9.8 m/s². - Mass and Weight: Mass (kg) is constant; Weight (N) varies with gravity. 15. Newton's Law of Gravitation: F = G * m1 * m2 / r² 16. Relations: i) g = G * M / R² ii) W = m * g