The anguar dispacement fo a rotating body is given by 0 44.8 Hint Calculations in rad mode. OA 6O80 rad/s OB 608 rads? 6800 rad/y? OD eno radis QUESTION 12 Is the function y-2x-5x + 7 increasing or decreasing at x -2? OA Not applicable OB increasing OC Niether D. Decreasing

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Chapter4: Motion In Two And Three Dimensions
Section: Chapter Questions
Problem 85AP: A propeller blade at rest starts to rotate from t=0 to t=5.0s with a tangential acceleration of the...
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The anguar dispacement foa rotating body is given by Ø44.Br+29.3+ B1.5 rad, Find the anguar ecceleretion at t22.4s
Hint Calculations in rad mode.
OA 6080 rad/s
OB. 608 rad/s
OC s800 rad/s?
O D. 6no radis
QUESTION 12
Is the function y-2x- 5x+ 7 increasing or decreasing at x =2?
OA Not applicable
OB Increasing
OC Niether
O D.Decreasing
Transcribed Image Text:The anguar dispacement foa rotating body is given by Ø44.Br+29.3+ B1.5 rad, Find the anguar ecceleretion at t22.4s Hint Calculations in rad mode. OA 6080 rad/s OB. 608 rad/s OC s800 rad/s? O D. 6no radis QUESTION 12 Is the function y-2x- 5x+ 7 increasing or decreasing at x =2? OA Not applicable OB Increasing OC Niether O D.Decreasing
Expert Solution
Step 1: Solution: Question 11

Answer is Option A) 6080 rad/s2Explanation:We know, angular acceleration is equal to second derative of angular displacementα=d2ϕdt2  =d2dt244.8t3+29.3t2+81.5  =6×44.8t+29.3×2  =6080 rad/s2........(at t=22.4 s)

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