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
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
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter6: Beams And Cables
Section: Chapter Questions
Problem 6.77P: The cable AOB weighs 5.2 N/m. When the horizontal 30-N force is applied to the roller support at B,...
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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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F28dc82a9-9516-4ffa-bf66-ab622a84dc6b%2F14d703ba-d5ab-4001-8966-4e312aa632bb%2Fpmfz8yb_processed.jpeg&w=3840&q=75)
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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