62_Dynamics 11ed Manual

# 62_Dynamics 11ed Manual - v 1 ft s = t 1 s = Given v 1 t 1...

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Engineering Mechanics - Dynamics Chapter 12 r 1 bt 1 2 ct 1 3 = v 1 2 bt 1 3 ct 1 2 = a 1 2 b 6 ct 1 = r 1 200 40 m = v 1 40 12 m s = a 1 4 2.4 m s 2 = r 1 204 m = v 1 41.8 m s = a 1 4.66 m s 2 = Problem 12–78 At the instant shown particle A is traveling to the right at speed v 1 and has an acceleration a 1 . Determine the initial speed v 0 of particle B so that when it is fired at the same instant from the angle shown it strikes A . Also, at what speed does it strike A ? Given: v 1 10 ft s = a 1 2 ft s 2 = b 3 = c 4 = h 100 ft = g 32.2 ft s 2 = Solution: Guesses
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Unformatted text preview: v 1 ft s = t 1 s = Given v 1 t 1 2 a 1 t 2 + c b 2 c 2 + ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ v t = h 1 2 gt 2 − b b 2 c 2 + ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ v t − = v t ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ Find v t , ( ) = t 2.224 s = v 15.28 ft s = v B c b 2 c 2 + v g − t b b 2 c 2 + v − ⎛ ⎜ ⎜ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎟ ⎟ ⎠ = v B 12.224 80.772 − ⎛ ⎝ ⎞ ⎠ ft s = v B 81.691 ft s = 60 Solution:...
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