The 500-lb beam is supported at A and B when it is subjected to a force of P = 900 lb as shown. (Figure 1) If the pin support at A suddenly fails, determine the beam's initial angular acceleration. For the calculation, assume that the beam is a slender rod so that its thickness can be neglected. Express your answer to three significant figures and include the appropriate units. μA ?

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Use work and energy to calculate the final angular velocity (e) of the 10kg bar. The bar has the initial motion shown and displaces 0 = 90°. 2m 3 radis

The 15.5-kg uniform bar is supported by a roller at A. A horizontal force of F = 80 N is applied to the roller. Neglect the weight and the size of the roller. (Figure 1) Figure y L. F = 80 N 2 m 1 of 1 Part A Determine the magnitude of the acceleration of the roller center at the instant the force is applied. Express your answer to three significant figures and include the appropriate units. aд = Submit Part B 0 = O μA Value Submit Request Answer Determine the direction of the acceleration of the roller center at the instant the force is applied, measured counterclockwise from the positive x axis. Express your answer using three significant figures. Units IVE ΑΣΦ 11 | vec Request Answer ? ? O