Question

In: Physics

A compact disc rotates from rest up to an angular speed of 34.3 rad/s in a...

A compact disc rotates from rest up to an angular speed of 34.3 rad/s in a time of 0.867 s.

(a) What is the angular acceleration of the disc, assuming the angular acceleration is uniform?
rad/s2

(b) Through what angle does the disc turn while coming up to speed?
rad

(c) If the radius of the disc is 4.45 cm, find the tangential speed of a microbe riding on the rim of the disc.
m/s

(d) What is the magnitude of the tangential acceleration of the microbe at the given time?
m/s2

Use the values from above to help you work this exercise.
(a) What are the angular speed and angular displacement of the disc 0.340 s after it begins to rotate?

ω = rad/s
Δθ = rad


(b) Find the tangential speed at the rim at this time.
m/s

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