Freight car A with a gross weight of 155000 lb is moving along the horizontal track in a switching yard at 2.3 mi/hr. Freight car B with a gross weight of 129000 lb and moving at 2.8 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. 2.8 mi/hr 2.3 mi/hr B A Answers: (a) V = i mi/hr (b) ΙΔΕΙ- i ft-lb

Freight car A with a gross weight of 155000 lb is moving along the horizontal track in a switching yard at 2.3 mi/hr. Freight car B with a gross weight of 129000 lb and moving at 2.8 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. 2.8 mi/hr 2.3 mi/hr B A Answers: (a) V = i mi/hr (b) ΙΔΕΙ- 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

Section: Chapter Questions

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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