A 200 lb block is suspended from an inextensible cable which is wrapped around a drum of 1.3 ft radius rigidly attached to a flywheel. The drum and flywheel have a combined centroidal moment of Inertia lc= 10 lb•ft-s^ 2. At the instant shown, the velocity of the block is 5 ft/s directed downward. Knowing that the bearing at A is poorly lubricated and that the bearing friction is equivalent to a couple M of magnitude 60 lb-ft. determine the work or U 1. - 2 (in ft-lb) after it has moved 4.2 ft downward. FINAL ANSWER IN 4 DECIMAL PLACES THANK YOU!
A 200 lb block is suspended from an inextensible cable which is wrapped around a drum of 1.3 ft radius rigidly attached to a flywheel. The drum and flywheel have a combined centroidal moment of Inertia lc= 10 lb•ft-s^ 2. At the instant shown, the velocity of the block is 5 ft/s directed downward. Knowing that the bearing at A is poorly lubricated and that the bearing friction is equivalent to a couple M of magnitude 60 lb-ft. determine the work or U 1. - 2 (in ft-lb) after it has moved 4.2 ft downward. FINAL ANSWER IN 4 DECIMAL PLACES THANK YOU!
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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Rigid Body
A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.
Rigid Body Dynamics
Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).
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A 200 lb block is suspended from an inextensible cable which is wrapped around a drum of 1.3 ft radius rigidly attached to a flywheel. The drum and flywheel have a combined centroidal moment of Inertia lc= 10 lb•ft-s^ 2. At the instant shown, the velocity of the block is 5 ft/s directed downward. Knowing that the bearing at A is poorly lubricated and that the bearing friction is equivalent to a couple M of magnitude 60 lb-ft. determine the work or U 1. - 2 (in ft-lb) after it has moved 4.2 ft downward.
FINAL ANSWER IN 4 DECIMAL PLACES THANK YOU!
Transcribed Image Text:A 200-lb block is suspended from an inextensible cable which is wrapped around a drum of 1.3 ft radius rigidly attached to a flywheel. The drum and flywheel have a
combined centroidal moment of Inertia lg =10 lb-ft-s?. At the instant shown, the velocity of the block is 5 ft/s directed downward. Knowing that the bearing at Ais
poorly lubricated and that the bearing friction is equivalent to a couple Mof magnitude 60 lb-ft, determine the work or U.z (in ft-lb) after it has moved 4.2 ft
downward.
200
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