The crankshaft of the two-cylinder engine (Fig.

P15.27, page 883) is rotating counterclockwise with a constant angular speed ω = 330 rev/min.

Determine the x and y components of the primary shaking force on the crankshaft bearing, and the magnitudes and orientations of the inertial forces created by the correcting masses that balance the primary shaking force. Determine the magnitude and orientation of the primary shaking force when the reference line (attached to crank 1) is specified at crank angle θ = 0◦.