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Physics bars?

A machine part consists of a thin, uniform 4.00-kg bar that is 1.50 m long, hinged perpendicular to a similar vertical bar of mass 3.00 kg and length 1.80 m. The longer bar has a small but dense 2.00-kg ball at one end (Figure 1)
a)By what distance will the center of mass of this part move horizontally and vertically if the vertical bar is pivoted counterclockwise through 90 ∘ to make the entire part horizontal?
Find the magnitude of horizontal displacement.
b)Find the direction of horizontal displacement.
c)Find the magnitude of vertical displacement.
d)Find the direction of vertical displacement.

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