Question 2: Objects A and B are connected by a rope with fixed length of 7 ft. They start moving from rest at x 0, being pulled by the constant 20-lb force. If the coefficient of kinetic friction 4 is 0.2 between both objects .A, B and the contacting surface, what is the total work done to the system (that contains the objects A and B) when x 4 ft? Neglect the friction at the pulley. WB 20 lb r-4 ft 3 ft 20 lb W 12 lb

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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40°
(d) 306 J
Question 2: Objects A and B are connected by a rope with fixed length of 7 ft. They
start moving from rest at x 0, being pulled by the constant 20-lb force. If the
coefficient of kinetic friction 4, is 0.2 between both objects .4, B and the contacting
surface, what is the total work done to the system (that contains the objects A and B)
when x 4 ft? Neglect the friction at the pulley.
WB 20 lb
r-D4 ft
3 ft
20 lb
W 12 lb
Answer: 1b2(62.4 ib.ft)
Transcribed Image Text:40° (d) 306 J Question 2: Objects A and B are connected by a rope with fixed length of 7 ft. They start moving from rest at x 0, being pulled by the constant 20-lb force. If the coefficient of kinetic friction 4, is 0.2 between both objects .4, B and the contacting surface, what is the total work done to the system (that contains the objects A and B) when x 4 ft? Neglect the friction at the pulley. WB 20 lb r-D4 ft 3 ft 20 lb W 12 lb Answer: 1b2(62.4 ib.ft)
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