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CALC The angle ? through which a disk drive turns is given
Chapter 9, Problem 7E(choose chapter or problem)
Problem 7E
CALC The angle θ through which a disk drive turns is given by θ(t) = a + bt - ct3, where a, b, and c are constants, t is in seconds, and θ is in radians. When t = 0, θ = π/4 rad and the angular velocity is 2.00 rad/s. When t = 1.50 s, the angular acceleration is 1.25 rad/s2. (a) Find a, b, and c, including their units. (b) What is the angular acceleration when θ = π/4 rad? (c) What are and the angular velocity when the angular acceleration is 3.50 rad/s2?
Questions & Answers
QUESTION:
Problem 7E
CALC The angle θ through which a disk drive turns is given by θ(t) = a + bt - ct3, where a, b, and c are constants, t is in seconds, and θ is in radians. When t = 0, θ = π/4 rad and the angular velocity is 2.00 rad/s. When t = 1.50 s, the angular acceleration is 1.25 rad/s2. (a) Find a, b, and c, including their units. (b) What is the angular acceleration when θ = π/4 rad? (c) What are and the angular velocity when the angular acceleration is 3.50 rad/s2?
ANSWER:
Step 1 of 4
To calculate a, b and c use the values of