Question

The angular position of a rotating object is given by the equation ? = a + bt + ct² where a, b, and c are constants. Here a = 1.40 rad, b = 1.92 rad/s, and c = 3.00 rad/s². (a) What is the position of the object at t? = 0 and t? = 4.20 s? ?? = rad ?? = rad (b) What is the angular speed of the object at t? = 0 and t? = 4.20 s? ?? = rad/s ?? = rad/s (c) What is the angular acceleration of the object at t? = 0 and t? = 4.20 s? ?? = rad/s² ?? = rad/s²

          The angular position of a rotating object is given by the equation ? = a + bt + ct² where a, b, and c are constants. Here a = 1.40 rad, b = 1.92 rad/s, and c = 3.00 rad/s².
(a) What is the position of the object at t? = 0 and t? = 4.20 s?
?? =  rad
?? =  rad
(b) What is the angular speed of the object at t? = 0 and t? = 4.20 s?
?? =  rad/s
?? =  rad/s
(c) What is the angular acceleration of the object at t? = 0 and t? = 4.20 s?
?? =  rad/s²
?? =  rad/s²

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The angular position of a rotating object is given by the equation ? = a + bt + ct² where a, b, and c are constants. Here a = 1.40 rad, b = 1.92 rad/s, and c = 3.00 rad/s².
(a) What is the position of the object at t? = 0 and t? = 4.20 s?
?? = rad
?? = rad
(b) What is the angular speed of the object at t? = 0 and t? = 4.20 s?
?? = rad/s
?? = rad/s
(c) What is the angular acceleration of the object at t? = 0 and t? = 4.20 s?
?? = rad/s²
?? = rad/s²

Added by Hunter M.

University Physics with Modern Physics In SI Units

Hugh D Young; Roger A Freedman 15th Edition

Chapter 9

Instant Answer

Solved by Expert Cyra Jelle Calleja

03/18/2022

Step 1

20 \) seconds using the given equation \( \theta = a + bt + ct^2 \): At \( t = 0 \): \( \theta_1 = 1.40 + 1.92(0) + 3.00(0)^2 = 1.40 \) rad At \( t = 4.20 \): \( \theta_2 = 1.40 + 1.92(4.20) + 3.00(4.20)^2 = 62.40 \) rad Show more…

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The angular position of a rotating object is given by the equation ̘ = a + bt + ct² where a, b, and c are constants. Here a = 1.40 rad, b = 1.92 rad/s, and c = 3.00 rad/s². (a) What is the position of the object at t₁ = 0 and t₂ = 4.20 s? ̘₁ = rad ̘₂ = rad (b) What is the angular speed of the object at t₁ = 0 and t₂ = 4.20 s? ω₁ = rad/s ω₂ = rad/s (c) What is the angular acceleration of the object at t₁ = 0 and t₂ = 4.20 s? α₁ = rad/s² α₂ = rad/s²

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