329_Dynamics 11ed Manual

329_Dynamics 11ed Manual - s = v 2 50 ft s = Solution: W 1...

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Engineering Mechanics - Dynamics Chapter 15 v B W 1 W 2 v 1 d c 2 d 2 + v 2 b a 2 b 2 + = v B 3.48 ft s = 1 2 W 2 g v B 2 μ k W 2 d 0 = d v B 2 2 g k = d 0.38 ft = Problem 15-41 A bullet of weight W 1 traveling at v 1 strikes the wooden block of weight W 2 and exits the other side at v 2 as shown. Determine the speed of the block just after the bullet exits the block. Also, determine the average normal force on the block if the bullet passes through it in time Δ t , and the time the block slides before it stops. The coefficient of kinetic friction between the block and the surface is k . Units Used: ms 10 3 s = Given: W 1 0.03 lb = a 3f t = W 2 10 lb = b 4f = μ k 0.5 = c t = Δ t 1ms = d 12 ft = v
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Unformatted text preview: s = v 2 50 ft s = Solution: W 1 g v 1 d c 2 d 2 + W 2 g v B W 1 g v 2 b a 2 b 2 + + = v B W 1 W 2 v 1 d c 2 d 2 + v 2 b a 2 b 2 + = v B 3.48 ft s = W 1 g v 1 c c 2 d 2 + N W 2 ( ) t + W 1 g v 2 a a 2 b 2 + = N W 1 g t v 2 a a 2 b 2 + v 1 c c 2 d 2 + + W 2 + = N 503.79 lb = W 2 g v B k W 2 t = t v B g k = t 0.22 s = 327...
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