Freight car A with a gross weight
of 160000 lb is moving along the horizontal track in a
switching yard at 2.8 mi/hr. Freight
car B with a gross weight of 158000 lb
and moving at 3.6 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 |ΔE| due to the impact.
Freight Car A With A Gross Weight Of 160000 Lb Is Moving Along The Horizontal Track In A Switching Yard At 2 8 Mi Hr Fr 1 (91.33 KiB) Viewed 37 times
Freight car A with a gross weight of 160000 lb is moving along the horizontal track in a switching yard at 2.8 mi/hr. Freight car B with a gross weight of 158000 lb and moving at 3.6 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. 3.6 mi/hr 2.8 mi/hr B A Answers: (a) V= i mi/hr (b) ΙΔΕ] = i ft-lb
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