To polish a filling, a dentist attaches a sanding disk with aradius of 3.20 mm to the drill. (a) When the drill is operated at2.15 * 104rad>s, what is the tangential speed of the rim of thedisk? (b) What period of rotation must the disk have if the tangential speed of its rim is to be 275 m>s?
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.
To polish a filling, a dentist attaches a sanding disk with a
radius of 3.20 mm to the drill. (a) When the drill is operated at
2.15 * 104
rad>s, what is the tangential speed of the rim of the
disk? (b) What period of rotation must the disk have if the tangential speed of its rim is to be 275 m>s?
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