An object of mass m swings in a horizontal circle on a string of length L that tilts downward at angle 0. Part A Find an expression for the angular velocity w in terms of g, L and angle 8. Express your answer in terms of the variables L, 0 and appropriate constants. VO ΑΣΦ W= Submit Part B W= Request Answer Submit A student ties a 900 g rock to a 1.8-m-long string and swings it around her head in a horizontal circle. At what angular speed, in rpm, does the string tilt down at a 10° angle? Express your answer to two significant figures and include the appropriate units. μA Value Request Answer → → Units ? ?

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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.