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# UEME 1143 Dynamcis Assignment (10%) Arrange in a group of 2, solve the following questions: A uniform slender bar AB of mass m is suspended from two...

1. A uniform slender bar AB of mass m is suspended from two wires as shown in Figure 1.
a. If the wire 2 breaks, determine at that instant
i. the angular acceleration of the bar
ii. the acceleration of point A
iii. the acceleration of point B.
b. State all the assumption(s) needed to be made to solve this question.
c. Describe the type or category of this question in terms of either particle/rigid body
and kinematic/kinetic or a combination of more than one (1) category.
d. State all possible method(s) that could be used to solve this question. If there is more
than one (1) method, provide the solution(s) for all possible methods.
Figure 1
2. As shown in Figure 2, rod AB moves vertically at C while end A moves to the right with a
constant velocity vA.
a. State all the assumption(s) needed to be made to solve this question.
b. Derive expressions for the horizontal and vertical components of the velocity of
point B in term of vA, b, xA and L.
c. Given that the vA = 0.8m/s,  = 300, L = 0.5m and M = 0.3m, determine the angular
velocity of the rod and the velocity of point B.
d. Describe the type or category of this question in terms of either particle/rigid body
and kinematic/kinetic or a combination of more than one (1) category.
e. State all the possible method(s) that could be used to solve this question. If there is
more than one (1) method, provide the solution(s) for all possible methods.

2. As shown in Figure 2, rod AB moves vertically at C while end A moves to the right with a
constant velocity vA.
a. State all the assumption(s) needed to be made to solve this question.
b. Derive expressions for the horizontal and vertical components of the velocity of
point B in term of vA, b, xA and L.
c. Given that the vA = 0.8m/s,  = 300, L = 0.5m and M = 0.3m, determine the angular
velocity of the rod and the velocity of point B.
d. Describe the type or category of this question in terms of either particle/rigid body
and kinematic/kinetic or a combination of more than one (1) category.
e. State all the possible method(s) that could be used to solve this question. If there is
more than one (1) method, provide the solution(s) for all possible methods.
Figure
UEME 1143 Dynamcis Assignment (10%) Arrange in a group of 2, solve the following questions: 1. A uniform slender bar AB of mass m is suspended from two wires as shown in Figure 1. a. If the wire 2 breaks, determine at that instant i. the angular acceleration of the bar ii. the acceleration of point A iii. the acceleration of point B . b. State all the assumption(s) needed to be made to solve this question. c. Describe the type or category of this question in terms of either particle/rigid body and kinematic/kinetic or a combination of more than one (1) category. d. State all possible method(s) that could be used to solve this question. If there is more than one (1) method, provide the solution(s) for all possible methods. Figure 1 2. As shown in Figure 2, rod AB moves vertically at C while end A moves to the right with a constant velocity v A . a. State all the assumption(s) needed to be made to solve this question. b. Derive expressions for the horizontal and vertical components of the velocity of point B in term of v A , b, x A and L . c. Given that the v A = 0.8m/s, & = 30 0 , L = 0.5m and M = 0.3m, determine the angular velocity of the rod and the velocity of point B . d. Describe the type or category of this question in terms of either particle/rigid body and kinematic/kinetic or a combination of more than one (1) category. e. State all the possible method(s) that could be used to solve this question. If there is more than one (1) method, provide the solution(s) for all possible methods. Figure 2

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