Problem 17.118

The 490-lb beam is supported at A and B when it is subjected to a force of P = 900 lb as shown.

Part A

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.

α =	22.0 rads2

Part B

Determine the force of the roller support on the beam.

Express your answer to three significant figures and include the appropriate units.

By =

27.9 lb