Problem 17.106

The uniform bar of mass m and length L is balanced in the vertical position when the horizontal force P is applied to the roller at A.

Part A

Determine the bar's initial angular acceleration, measured clockwise.

Express your answer in terms of some or all of the variables P, m, and L. Enter positive value if the angular acceleration is clockwise and negative value if the angular acceleration is counterclockwise.

α =

6PmL

Part B

Determine the acceleration of the bar's top point B.

Express your answer in terms of some or all of the variables P, m, and L. Enter positive value if the acceleration is to the right and negative value if the acceleration is to the left.

aB =

2Pm