Asked by Anonymous

Suppose that a disk rotates through two revolutions in 5.5 seconds.

(a) What is its displacement in radians in this time?
(b) What is its average rotational velocity in rad/s?

Answers

Answered by Anonymous
a.)2π radians = 1 revolution
4π radians = 2 revolutions
4*π=12.56637061 rad

b.) (2rev/ 5.5sec)(2π radians/revolution)
(0.363636)(6.283185301)
= 2.284794657
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