ENES 221-Hw9 - S10
ENES 221-Hw9 - S10
ENES 221-Hw9 - S10
Homework #9
Due
ue Date: Tuesday, April 6, in lecture
1) The 20-kg
kg roll of paper has a radius of gyration kA = 90 mm about an
axis passing through point A. It is pin
pin-supported at both ends by two B
brackets AB. If the rolll rests against a wall for which the coefficient of m
m
300 mm
5
kinetic friction is µk = 0.2 and a vertical force F = 30 N is applied to the R
12
end of the paper, determine the angular acceleration of the roll as the
paper unrolls.
C A
respectively.