2009 exam3 1. As the crank O 1 A 1 rotates (constant angular velocity), it produces sinusoidal displacement of the sliding link BCD. A pin at A 1 (dark circle) is rigidly attached to the arm, and engages slot BC. Find an expression for the velocity and acceleration of link BCD. 2010 exam 2 1. Two spheres, each mass m, are attached at the ends of a rod with negligible mass. A horizontal force, F, is applied rapidly to the rod a distance a from its mass center. All motion is in the horizontal plane, and friction is negligible. Find: a) The instantaneous acceleration of the rod’s mass center G (5 points) b) The instantaneous angular acceleration of the rod (5 points) A 1 O 1 B C D Linear bearings θ T O 1 A 1 Length = d Mass = m Moment of inertia = I O , with respect to the pivot O 1 Slider BCD Mass = m s L/2 L/2 F a G
2010 exam 2 2. Water flows vertically into a fire hydrant at 5 ft 3 /sec, and exits horizontally, 3 ft above the ground. The pressure at the inlet is 100 lb/in 2 , the areas of the inlet and outlet are A in and A out
You've reached the end of your free preview.
Want to read all 3 pages?