The bar is now placed on a horizontal, frictionless surface. A constant force of magnitude Fis exerted on the far-right end of the bar, perpendicular to the bar and remains perpendicular, even as the bar rotates. The bar of mass M and length L rotates from position A to position B in a time interval of t. The same constant force of magnitude Fis also exerted on a second bar of mass M/2 and length L/2. 3) Determine how much time, in terms of t, it takes the second smaller bar to rotate from A to B. Clearly show your work or justify your answer.

Part A The arm is rotating at a rate of 0 = 4 rad/s when 6 = 3 rad/s and 0 = 180°. It is confined to move along the slotted path. Motion occurs in the horizontal plane. (Figure 1) Determine the force it must exert on the 0.25-kg smooth cylinder. Express your answer to three significant figures and include the appropriate units. ? F = Value Units Submit Request Answer Provide Feedback Figure <) 1 of 1 e = 4 rad/s, ö = 3 rad/s e = 180° ) m

Rod OA rotates counterclockwise at a constant angular rate 0-4 rad/s. The double collar B is pin-connected together such that one collar slides over the rotating rod and the other collar slides over the circular rod described by the equation r= (1.6 cos 6) m. Both collars have a mass of 0.65 kg. Motion is in the vertical plane. (Figure 1) Figure r=1.6 cos 9. 0-4 rad/s 0.8 m 1 of 1 Part A Determine the magnitude of the force which the circular rod exerts on one of the collars at the instant 0=45 Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) F= Value Submit μÁ Part B Previous Answers Units X Incorrect; Try Again; 5 attempts remaining Determine the magnitude of the force that OA exerts on the other colar at the instant @-45. Express your answer to three significant figures and include the appropriate units. View Available Hint(s)

A slender bar with a length of 2 ft is pin-connected with a roller positioned on a smooth horizontal surface. The bar is at rest initially, and a horizontal force F is applied to the roller. If F = 13 lb and the weight of the bar is 10 lb, calculate the magnitude of the acceleration of the roller at that instant by neglecting the mass and the size d of the roller. Present your answer in ft/sec² using 3 significant figures. FOR COMARCA 2 ft F