Olympic ice skaters are able to spin at about 5.0 rev/s. a. What is their angular velocity in radians per second? b. What is the centripetal acceleration of the skater’s nose if it is 0.120 m from the axis of rotation in m/s2? c. An exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since—at about 9 rev/s. What was the centripetal acceleration of the tip of his nose, assuming it is at 0.120 m radius in m/s2?
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.
Olympic ice skaters are able to spin at about 5.0 rev/s.
a. What is their
b. What is the centripetal acceleration of the skater’s nose if it is 0.120 m from the axis of rotation in m/s2?
c. An exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since—at about 9 rev/s. What was the centripetal acceleration of the tip of his nose, assuming it is at 0.120 m radius in m/s2?
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