NCERT Class 9 Science Chapter 9 Gravitation Solutions
NCERT Class 9 Science Chapter 9 Gravitation Solutions GENERAL SCIENCE TEXTUAL QUESTIONS AND ANSWERS INTEX QUESTIONS AND ANSWERS 1. State the universal law of gravitation. Ans. Gravitation states that every object of the universe attracts every other object. The force of attraction between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them. 2. Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth. Ans. The magnitude of the gravitational force between the earth and an object on the surface of the earth is given by the formula: Where, F = gravitational force M = Mass of the earth m = Mass of the object d = Distance between the earth and the object G = Universal gravitational constant = 6.67×10⁻¹¹ N m² kg⁻² Textbook Page No. 136 1. What do you mean by free-fall? Ans. Whenever an object falls under the effect of only gravitational force ...
