Flip Problem Set
Flip Problem Set
Flip Problem Set
12. The slender rod shown in Fig. has a mass m and length
l and is released from rest when e = 0°. Determine the
9. The unbalanced SO-lb flywheel shown in Fig. has a
horizontal and vertical components of force which the
radius of gyration of kG = 0.6 ft about an axis passing
pin at A exerts on the rod at the instant e = 90°.
through its mass center G. If it is released from rest,
determine the horizontal and vertical components of
reaction at the pin O.
13. Determine the angular acceleration of the spool in 16. The uniform 50-kg bar in Fig. is held in the equilibrium
Fig. The spool has a mass of 8 kg and a radius of position by cords AC and BD. Determine the tension
gyration of kc = 0.35 m. The cords of negligible mass in BD and the angular acceleration of the bar
are wrapped around its inner hub and outer rim. immediately after AC is cut.
20. Determine the moment of inertia of the overhung 23. At the instant shown both rods of negligible mass
crank about the x axis. The material is steel for which swing with a counterclockwise angular velocity of w =
the density is p = 7.85 Mg/m3. 5 rad/s, while the 50-kg bar is subjected to the 100-N
horizontal force. Determine the tension developed in
the rods and the angular acceleration of the rods at
this instant.
21. The cart and its load have a total mass of 100 kg. 24. At the instant shown, link CD rotates with an angular
Determine the acceleration of the cart and the normal velocity of w = 6 rad/s. If it is subjected to a couple
reactions on the pair of wheels at A and B. Neglect the moment M = 450 N . m, determine the force
mass of the wheels. developed in link AB, the horizontal and vertical
component of reaction on pin D, and the angular
acceleration of link CD at this instant. The block has
a mass of 50 kg and center of mass at G. Neglect the
mass of links AB and CD.