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8.17 Molecules in air in the atmosphere are attracted by gravitational force of the earth. Explain why all of them do not fall into the earth just like an apple falling from a tree. 8.18 Give one example each of central force and non-central force. 8.19 Draw areal velocity versus time graph for mars.
This force is called the gravitational force. In this chapter we shall learn about gravitation and the universal law of gravitation. We shall discuss the motion of objects under the influence of gravitational force on the earth. We shall study how the weight of a body varies from place to place.
Summary Points to ponder Exercises. CHAPTER SEVEN. GRAVITATION. 7.1 INTRODUCTION. Early in our lives, we become aware of the tendency of all material objects to be attracted towards the earth.
14 wrz 2017 · Gravitational force is one of the natural forces in the world. Between any two masses consisting of matter, there exists a gravitational force of attraction ...
Solution. Definition. The gravitational force would be described as a force of attraction (attractive force) that attracts all physical forms having mass. It is by far the weakest recognized natural force. Mathematical representation. Mathematically, gravitational force can be represented as: F = G m 1 m 2 r 2. Here, F is the gravitational force.
4 paź 2019 · Gravitational force. NCERT Solutions for Class 8 Science Chapter 11 – 2 Mark Questions and Answers. Question 1. Why is it comfortable to lift a school bag with broad straps than thin straps ? [NCT 2008] Answer: Pressure is inversely proportional to area. Since broader straps have greater area, therefore, the pressure decreases. Question 2.
Gravitational force. The attractive force that a body experiences towards the centre of the earth is called the force of gravity due to earth. Property of the universe, every object attracts or exerts a force on every other object. Electrostatic force
