825_Dynamics 11ed Manual

825_Dynamics 11ed Manual - C F k 1 n 2 = C 0.490 in =...

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Engineering Mechanics - Dynamics Chapter 22 Problem 22-53 The electric motor turns an eccentric flywheel which is equivalent to an unbalanced weight W b located distance d from the axis of rotation. The static deflection of the beam is δ because of the weight of the motor. The motor has weight W m . Neglect the mass of the beam. What will be the amplitude of steady-state vibration of the motor if the angular velocity of the flywheel is ω ? Given: W b 0.25 lb = W m 150 lb = d 10 in = g 32.2 ft s 2 = 1in = 20 rad s = Solution: k W m = k 1800 lb ft = n kg W m = n 19.66 rad s = F 0 W b g d 2 = F 0 2.59 lb = From Eq. 22-21, the amplitude of the steady state motion is
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Unformatted text preview: C F k 1 n 2 = C 0.490 in = Problem 22-54 The electric motor turns an eccentric flywheel which is equivalent to an unbalanced weight W b located distance d from the axis of rotation. The static deflection of the beam is because of the weight of the motor. The motor has weight W m . Neglect the mass of the beam. Determine the angular velocity of the flywheel which will produce an amplitude of vibration C . Given: W b 0.25 lb = 823...
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