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perodic table

on November 21, 2007

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1. Introduction The Rigid Body. A body in which the distance between any two points does not change due to the application of external forces is called a rigid body (figure 1). Motion of a Rigid Body. Various types of motions of a rigid body can be grouped mainly into three categories viz. Translation, fixed axis rotation and the general plane motion. 2. Translation A motion is said to be a translation if any straight line inside the body keeps the same direction during the motion. It may also be observed that in a translation all the particles forming the body move along parallel paths. If these paths are straight lines, the motion is said to be rectilinear translation (figure 2); if the paths are curved lines, the motion is a curvilinear translation (figure 3). Position of a point in the rigid body. The position of any point B of the rigid body in translation is de

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ou are expected to know: the characteristic features of simple harmonic motion ; exchange of potential and kinetic energy ; the use of a = -(2 p f) 2 x, x = Acos2 p ft, v = ± 2 p f Ö (A 2 – x 2 ) ; Graphical representations linking displacement, velocity, acceleration, time, energy ; Simple pendulum and mass-spring ; The use of T = 2 pÖ (l/g) and T = 2 p Ö (m/k) ; Datalogging techniques. There are four different kinds of motion that we can encounter in Physics: Linear (in a straight line) Circular (going round in a circle) Rotational (spinning on an axis) Oscillations (going backwards and forwards in a to-and-fro movement.) Anything that swings or bounces or vibrates in a regular to-and-fro motion is said to oscillate . Examples include a swinging pendulum or a spring bouncing up and do

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