Part A A Ferris wheel with radius 14.8 m and initial angular speed 0.18 rad/s starts speeding up with constant angular acceleration 0.28 rad/s. The magnitude of the resultant (total) acceleration of a point on the edge of the wheel 1.4 s after it starts speeding up is (enter your answer with two significant figures) possibly useful: wwwo+ at ay ar Pythagoras: a b- tan(e) = oppladj m/s Submit Request Answer Part B The angle that the resultant acceleration vector makes with the tangential direction of motion is (enter your answer with two significant figures) degrees Submit Request Answer

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The ladder of the fire truck rotates around the z axis with an angular velocity w₁ = 0.10 rad/s, which is increasing at 0.78 rad/s². At the same instant it is rotating upward at a constant rate w₂ = 0.65 rad/s. (Figure 1) Figure @n 40 ft АНННННННHaddddin 0₂ 30° 1 of 1 Part A Determine the velocity of point A located at the top of the ladder at this instant. Enter the components of the velocity in feet per second to three significant figures separated by commas. V Ax, VAy, Az = -3.46,-13.0,22.5 ft/s Submit All attempts used; correct answer displayed Part B Previous Answers Determine the acceleration of point A located at the top of the ladder at this instant. Enter the components of the acceleration in feet per second squared to three significant figures separated by commas. a Ax, a Ay, a Az = Submit Provide Feedback 17 ΑΣΦ - 15.6, -27.0, – 31.2 ↓↑ vec Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining ? ft/s² Next >

A playground merry-go-round has a radius of 4.30 mm and a moment of inertia of 243 kg⋅m2kg⋅m2 and turns with negligible friction about a vertical axle through its center. Part A A child applies a 25.0 NN force tangentially to the edge of the merry-go-round for 18.0 ss . If the merry-go-round is initially at rest, what is its angular velocity after this 18.0 ss interval? Express your answer in radians per second.     Part B How much work did the child do on the merry-go-round? Express your answer in joules.       Part C What is the average power supplied by the child? Express your asnwer in watts.