The tractor-trailer unit is moving down the incline with a speed of 5.7 mi/hr when the driver brakes the tractor to a stop in a distance of 4.8 ft. Estimate the percent increase n in the hitch-force component which is parallel to the incline, compared with the force present at steady speed. The cart and its load combined weigh 540 lb. State any assumptions. 5 14 Answer: n = i %

The tractor-trailer unit is moving down the incline with a speed of 5.7 mi/hr when the driver brakes the tractor to a stop in a distance of 4.8 ft. Estimate the percent increase n in the hitch-force component which is parallel to the incline, compared with the force present at steady speed. The cart and its load combined weigh 540 lb. State any assumptions. 5 14 Answer: n = i %

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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