A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volum being 0.05 m. Calculate the work done by the fluid when it expands reversibly: (i) at constant pressure to a final volume of 0.2 m: (ii) according to a linear law to a final volume of 0.2 m' and a final pressure of 2 bar;

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.