A13.7 n force is applied to a cord wrapped around a disk of radius 0.43 m. the disk accelerates uniformly from rest to an angular speed of 30.3 rad/s in 3.43 s. determine the angular acceleration of the disk. hint: the average acceleration is the change in angular speed over time.

8.83 rad/s²

Explanation:

w₀ = initial angular speed of the disk = 0 rad/s

w = final angular speed of the disk = 30.3 rad/s

t = time period of rotation of the disk = 3.43 sec

= Angular acceleration of the disk

Angular acceleration of the disk is given as

inserting the values

= (30.3 - 0)/3.43

= 8.83 rad/s²

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

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a few of the positive particles aimed at a gold foil seemed to bounce back.

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experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.