An ice skater is spinning at an angular speed of 3.17 rad/s with a moment of inertia of 27.0 kg•m^2 on the icy surface (frictionless). After pulling in his arms, his angular speed increases to 5.66 rad/s. (A) what is his new inertia now? (B) find his kinetic energy (1) before pulling in his arms, and (2) after pulling in his arms. can you give detailed steps?
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.
An ice skater is spinning at an angular speed of 3.17 rad/s with a moment of inertia of 27.0 kg•m^2 on the icy surface (frictionless). After pulling in his arms, his angular speed increases to 5.66 rad/s.
(A) what is his new inertia now?
(B) find his kinetic energy (1) before pulling in his arms, and (2) after pulling in his arms.
can you give detailed steps?
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