= = 12 E r The slender bar OC (length 3r) and thin circular disk (radius r) with the same mass m are released from rest

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12 E R The Slender Bar Oc Length 3r And Thin Circular Disk Radius R With The Same Mass M Are Released From Rest 1 (248.33 KiB) Viewed 42 times

= = 12 E r The slender bar OC (length 3r) and thin circular disk (radius r) with the same mass m are released from rest with OC horizontal as shown. The pin joints at O and C are frictionless. The disk rolls without sliding on the circular track ABE as OC rotates about the fixed pivot at 0. As a function of angle 0 with respect to the horizontal direction (Note: for bar OC, 1 = ml? izm(3r)2 = mr2; 10 = 5 ml = $M(3r)2 = 3mr2; for the disk: I = { mr2) (hint: Moc = 0): FIND: (A) The absolute velocity of pin C. (B) The absolute angular velocity (@p) of the disk. (C) The absolute angular velocity (@oc) of the bar OC. (D) The absolute angular acceleration of the disk (ap). (E) The friction force by the circular track on the disk (F). (F) What maximum height will pin C reach as the disk climbs the back side of the circular track ABE? (G) If there is a small (but non-negligible) bit of friction in either pin joint, what changes occur in the results of (A-C)? A 3r B