583_Dynamics 11ed Manual

# 583_Dynamics 11ed Manual - B is brought into contact with A...

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Engineering Mechanics - Dynamics Chapter 17 Given: W 150 lb = a 4f t = g 32.2 ft s 2 = b 3f t = Solution: θ atan b a = Guesses T AB 1lb = α 1 rad s 2 = a Gx 1 ft s 2 = a Gy 1 ft s 2 = a B 1 ft s 2 = Given T AB cos θ () W g a Gx = T sin θ () W W g a Gy = a Gx a B sin θ () = T sin θ () a 1 12 W g 2 a () α = a Gy α a + a B θ () = T α a Gx a Gy a B Find T α , a Gx , a Gy , a B , () = a Gx a Gy a B 7.43 26.63 12.38 ft s 2 α 4.18 rad s 2 = T AB 43.3 lb = *Problem 17-104 A long strip of paper is wrapped into two rolls, each having mass M . Roll A is pin-supported about its center whereas roll B
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Unformatted text preview: B is brought into contact with A and released from rest, determine the initial tension in the paper between the rolls and the angular acceleration of each roll. For the calculation, assume the rolls to be approximated by cylinders. Given: M 8 kg = r 90 mm = g 9.81 m s 2 = Solution: Guesses T 1 N = a By 1 m s 2 = A 1 rad s 2 = B 1 rad s 2 = 581...
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