Freight car A with a gross weight of 154000 lb is moving along the horizontal track in a switching yard at 2.3 mi/hr. Freight car B with a gross weight of 159000 Ib and moving at 3.3 mi/hr overtakes car A and is coupled to it. Determine (a) the common velocity V of the two cars as they move together after being coupled and (b) the loss of energy |AE| due to the impact. 3.3 mi/hr 2.3 mi/hr B Answers: (a) V = mi/hr (b) ΔΕ- i ft-lb
Freight car A with a gross weight of 154000 lb is moving along the horizontal track in a switching yard at 2.3 mi/hr. Freight car B with a gross weight of 159000 Ib and moving at 3.3 mi/hr overtakes car A and is coupled to it. Determine (a) the common velocity V of the two cars as they move together after being coupled and (b) the loss of energy |AE| due to the impact. 3.3 mi/hr 2.3 mi/hr B Answers: (a) V = mi/hr (b) ΔΕ- i ft-lb
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
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Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...
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![Freight car A with a gross weight of 154000 Ib is moving along the horizontal track in a switching yard at 2.3 mi/hr. Freight car B with a
gross weight of 159000 Ib and moving at 3.3 mi/hr overtakes car A and is coupled to it. Determine (a) the common velocity V of the two
cars as they move together after being coupled and (b) the loss of energy |AE| due to the impact.
3.3 mi/hr
2.3 mi/hr
Answers:
(a) V =
i
mi/hr
( b) ΙΔΕΙ -
ft-lb
=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F149609ea-efae-44d9-ade4-d9d35dd18bbd%2F461864c5-fea4-4091-9ea2-7d7a7beb89c9%2Fz517x8_processed.png&w=3840&q=75)
Transcribed Image Text:Freight car A with a gross weight of 154000 Ib is moving along the horizontal track in a switching yard at 2.3 mi/hr. Freight car B with a
gross weight of 159000 Ib and moving at 3.3 mi/hr overtakes car A and is coupled to it. Determine (a) the common velocity V of the two
cars as they move together after being coupled and (b) the loss of energy |AE| due to the impact.
3.3 mi/hr
2.3 mi/hr
Answers:
(a) V =
i
mi/hr
( b) ΙΔΕΙ -
ft-lb
=
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