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The angle θ through which a disk drive turns is given by θ(t)=a+bt−ct3, where a,b and...

The angle θ through which a disk drive turns is given by θ(t)=a+bt−ct3, where a,b and c are constants, tis in seconds, and θ is in radians. When t=0,θ=π/4rad and the angular velocity is 1.50 rad/s, and when t=1.10s, the angular acceleration is 1.40 rad/s2.

A. Find a including their units.

π/4rad/s

π/2rad/s

π/4rad

π/4rad/s

B. Find b including their units.

1.50 rad/s2

1.50 rad/s

5.3 rad/s

5.3 rad/s2

C. Find c including their units.

-0.212 rad/s3

-0.212 rad/s2

3.3 rad/s3

4.5 rad/s3

D. What is the angular acceleration when θ=π/4rad?

E. What is θ when the angular acceleration is 4.10 rad/s2?

F. What is the angular velocity when the angular acceleration is 4.10 rad/s2?

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