(D)
(E)
28 . What is the linear speed of the rod’s center of mass when the mass passes through a vertical
position?
(A)
(B)
(C)
(D)
(E)
29 . The 1.0-m-long nonuniform plank, shown above, has weight 1000 N. It is to be supported by two
rods, A and B , as shown above. The center of mass of the plank is 30 cm from the right edge. Each
support bears half the weight of the plank. If support B is 10 cm from the right-hand edge, how far
from the left-hand edge should support A be?
(A) 0 cm
(B) 10 cm
(C) 30 cm
(D) 50 cm
(E) 70 cm