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friction always opposes the applied force. In the above activity, the force of friction acts between the surface of the book and the surface of the table. Is the friction the same for all the surfaces? Does it depend on the smoothness of the surfaces? Let us find out. 12.2 Factors affecting Friction Activity 12.2 Tie a string around a brick ...
12 Friction. MULTIPLE CHOICE QUESTIONS. 1. Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play. (a) only if the objects are solid. (b) only if one of the two objects is liquid. (c) only if one of the two objects is gaseous. 2.
The air offers resistance due to friction to the motion of the falling objects. The resistance offered by air to the paper is more than the resistance offered to the stone. If we do the experiment in a glass jar from which air has been sucked out, the paper and the stone would fall at the same rate.
Friction is defined as the resistance offered by the surfaces that are in contact when they move past each other. Friction provides traction that is needed to walk without slipping. Friction is helpful in most cases. However, they also offer a great measure of opposition to the motion.
6 Νοε 2023 · Chapter 10, “Light Reflection and Refraction,” marks the beginning of physics in Class 10 Science. This pivotal chapter lays the foundation for a solid understanding of light behavior. Key topics encompass the definitions and concepts of reflection, refraction, and the behavior of light in the presence of spherical mirrors.
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Friction is the force that resists the motion of two surfaces moving past one another. What Causes Friction? Friction is caused by intermolecular (IM) attractions between particles of the two adjoining surfaces. Two Types of Friction. 1. Static Friction (Ffrict-static)
