First Year Engineering Syllabus, Mumbai University

































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Module 1: Resultant

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  COPLANAR FORCE SYSTEM          1. Coplanar Collinear Force System: If two or more forces acting along the same line (or the line of action is same) lying on the same plane then the force system is called as coplanar collinear force system.   Direction of the forces does not matter only the condition is that all the forces must act along the same line (or the line of action of all the forces must be same).  The line of action may be horizontal, vertical or inclined.    Following figure shows force F1 acting toward left and forces F2, F3 and F4 acting towards right along the same line (the line of action is same) and all the forces lying on the same plane therefore this force system is called as coplanar collinear force system.        2.  Coplanar non-collinear Force System: If two or more forces acting along the same line (or the line of action is same) lying on the same plane then the force system is calle...
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Module 3: Friction

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Definition of friction: I two bodies are in contact with each other and one of them is allowed to move over the other, then the resistance to motion produced. This resistance to motion is called as friction. The friction is also called as force of friction, frictional force, frictional resistance etc. The friction is due to the roughness of the surface. Friction is depends on the nature of surface. And is independent of area in contact. For the smooth surface the friction is zero. Types of friction: There are two types of friction, 1) Static friction 2) Dynamic friction 1) Static friction: If a body is kept on a ground (or on the surface of other body) and is in equilibrium, then the friction experienced by a body is called as static friction. 2) Dynamic friction: If a body is moving on the surface of ground (or on the surface of other body), then the friction experienced by a body is called as dynamic friction. There are two types of dynamic friction: i) Sliding fric...
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