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Q4. The member OA of the industrial robot can rotate about the fixed point O and also change in length -- that is, distance between O and A can increase or decrease. At the instant shown, 0 = 60 degrees, è = 1.2 rad/s, and = 0.8 rad/s². Let us denote the distance OA by the variable r. We are told that r = 0.9 m, i = 0.5 m/s, and i = -6 m/s?. All motion is restricted to the x-y plane. a) Represent the velocity and acceleration of point A as vectors in terms of polar coordinates. i.e., write v = (some number) e, + (some number) ee. Do the same for acceleration vector a as well. %3D

Q4. The member OA of the industrial robot can rotate about the fixed point O and also change in length -- that is, distance between O and A can increase or decrease. At the instant shown, 0 = 60 degrees, è = 1.2 rad/s, and = 0.8 rad/s². Let us denote the distance OA by the variable r. We are told that r = 0.9 m, i = 0.5 m/s, and i = -6 m/s?. All motion is restricted to the x-y plane. a) Represent the velocity and acceleration of point A as vectors in terms of polar coordinates. i.e., write v = (some number) e, + (some number) ee. Do the same for acceleration vector a as well. %3D

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Q4. The member OA of the industrial robot can rotate about the fixed point O and also change in length -- that is, distance between O and A can increase or decrease. At the instant shown, 0 = 60 degrees, è = 1.2 rad/s, and = 0.8 rad/s?. Let us denote the distance OA by the variable r. We are told that r = 0.9 m, i = 0.5 m/s, and i = -6 m/s?. All motion is restricted to the x-y plane. a) Represent the velocity and acceleration of point A as vectors in terms of polar coordinates. i.e., write v = (some number) e, + (some number) ee. Do the same for acceleration vector a as well.
Transcribed Image Text:Q4. The member OA of the industrial robot can rotate about the fixed point O and also change in length -- that is, distance between O and A can increase or decrease. At the instant shown, 0 = 60 degrees, è = 1.2 rad/s, and = 0.8 rad/s?. Let us denote the distance OA by the variable r. We are told that r = 0.9 m, i = 0.5 m/s, and i = -6 m/s?. All motion is restricted to the x-y plane. a) Represent the velocity and acceleration of point A as vectors in terms of polar coordinates. i.e., write v = (some number) e, + (some number) ee. Do the same for acceleration vector a as well.
1.1 m 0.9 m 15° P
Transcribed Image Text:1.1 m 0.9 m 15° P
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