Spinning Dragonflies Measurements show that when adragonfly does a “spin-dry” (Problem 49), it can “spin up” fromv0 = 0 to v = 104 rad>s in 0.250 s. (a) Assuming constant angular acceleration, how many revolutions does the dragonfly makein this time? (b) How many revolutions has the dragonfly madewhen its angular speed is 51.2 rad>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.
Spinning Dragonflies Measurements show that when a
dragonfly does a “spin-dry” (Problem 49), it can “spin up” from
v0 = 0 to v = 104 rad>s in 0.250 s. (a) Assuming constant
in this time? (b) How many revolutions has the dragonfly made
when its angular speed is 51.2 rad>s?
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