304_Dynamics 11ed Manual

304_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Engineering Mechanics - Dynamics Chapter 15 Problem 15-1 A block of weight W slides down an inclined plane of angle θ with initial velocity v 0 . Determine the velocity of the block at time t 1 if the coefficient of kinetic friction between the block and the plane is μ k . Given: W 20 lb = t 1 3s = θ 30 deg = k 0.25 = v 0 2 ft s = g 32.2 ft s 2 = Solution: () mv y1 Σ t 1 t 2 t F y' d + y2 = 0 F N t 1 + W cos t 1 0 = F N W cos = F N 17.32 lb = x'1 Σ t 1 t 2 t F x' d + x'2 = W g v 0 W sin t 1 + k F N t 1 W g v = v Wv 0 W sin t 1 g k F N t 1 g + W = v 29.4 ft s = Problem 15-2 A ball of weight
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

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.

Ask a homework question - tutors are online