249_Dynamics 11ed Manual

# 249_Dynamics 11ed - Engineering Mechanics Dynamics Chapter 14 Problem 14-9 When the driver applies the brakes of a light truck traveling at speed

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Engineering Mechanics - Dynamics Chapter 14 Problem 14-9 When the driver applies the brakes of a light truck traveling at speed v 1 it skids a distance d 1 before stopping. How far will the truck skid if it is traveling at speed v 2 when the brakes are applied? Given: v 1 40 km hr = d 1 3m = v 2 80 km hr = Solution: 1 2 Mv 1 2 μ k Mgd 1 0 = k v 1 2 2 gd 1 = k 2.097 = 1 2 2 2 k 2 0 = d 2 v 2 2 2 k g = d 2 12 m = Problem 14-10 The ball of mass M of negligible size is fired up the vertical circular track using the spring plunger. The plunger keeps the spring compressed a distance
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## This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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