The 145-kg pendulum has a center of mass at g and a radius of gyration about g of kg = 250 mm . neglect the weight of the beam and the support. at the instant ? = 90? the pendulum is rotating at ? = 8 rad/s .

a) determine the x and y components of reaction on the beam by the pin a at the instant ? = 90? using scalar notation.

seperate your answer by commas.

ax , ay =

b) determine the magnitude of the normal reaction of the roller b at the instant ? = 90? .

nb=