a) The tower crane is used to hoist a 2Mg load upward at constant velocity. The 1.5-Mg jib BD and 0.5Mg jib GF 75 m BC have centers of mass at G1 and G2, respectively. Determine the required mass of the counterweight C so that the resultant moment produced by the load and -12.5 m- 23 m the weight of the tower crane jibs about point A is zero. The center of mass for the counterweight is located at G3? 300 N 250 N b) Replace the loading on the frame by a single resultant force. Specify where its line of action m2 m- -3 m- B intersects member AB, measured from A? 2 m A00 N.m

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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Q2/
4 m
9.5m
G,
a) The tower crane is used to hoist a 2Mg load upward
G E 7.5 m
-12.5 m-
at constant velocity. The 1.5-Mg jib BD and 0.5Mg jib
BC have centers of mass at G1 and G2, respectively.
Determine the required mass of the counterweight C
so that the resultant moment produced by the load and
23 m
the weight of the tower crane jibs about point A is
zero. The center of mass for the counterweight is
located at G3?
300 N
250 N
b) Replace the loading on the frame by a single
1 m2 m-
-3 m
B
resultant force. Specify where its line of action
intersects member AB, measured from A?
2 m
400 N-m
60°
3 m
500 N
Transcribed Image Text:Q2/ 4 m 9.5m G, a) The tower crane is used to hoist a 2Mg load upward G E 7.5 m -12.5 m- at constant velocity. The 1.5-Mg jib BD and 0.5Mg jib BC have centers of mass at G1 and G2, respectively. Determine the required mass of the counterweight C so that the resultant moment produced by the load and 23 m the weight of the tower crane jibs about point A is zero. The center of mass for the counterweight is located at G3? 300 N 250 N b) Replace the loading on the frame by a single 1 m2 m- -3 m B resultant force. Specify where its line of action intersects member AB, measured from A? 2 m 400 N-m 60° 3 m 500 N
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