The system is released from rest with the spring initially stretched 6.0 in. Calculate the velocity v of the cylinder after it has dropped1.2 in. The spring has a stiffness of 3.8 lb/in. Neglect the mass of the small pulley.k = 3.8 lb/in85 lbAnswer: v=ift/sec

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Answered: The system is released from rest with…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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A simple pendulum is pivoted at O and is free to swing in the vertical plane of the plate. If the plate is given a constant acceleration a = 3.6 m/s² up the incline 0 = 31°, find the steady angle ß assumed by the pendulum after all initial start-up oscillations have ceased. Neglect the mass of the slender supporting rod. Answer: 3 = i
2.) Figure (a) below shows a time variation of the force (P) which is applied on a block which weighs 25 lb as shown in Figure (b). Assume that the block is initially at rest and μk = μs = 0.15 a.Find the time at which the body start to move b.Find the velocity of the body after 3 seconds.
3/169 The 3-kg sphere is carried by the parallelogram linkage where the spring is unstretched when = 90°. If the mechanism is released from rest at 0 = 90°, calculate the velocity v of the sphere when the position = 135° is passed. The links are in the vertical plane, and their mass is small and may be neglected. 0 I.. 500 mm www 3 kg wˇˇˇˇˇˇˇˇˇˇwwwwww k = 100 N/m 500 mm I.. 500 mm Problem 3/169
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I Review | Constants Calculate the work done on the block by the spring as the block falls an arbitrary distance z. Express your answer in terms of the variables a, m, x, and the acceleration due to gravity g, if needed. Consider a hanging spring of negligible mass that does not obey Hooke's law. When the spring is pulled downward by a distance r, the spring exerts an upward force of magnitude ar, where a is a positive constant. Initially the hanging spring is relaxed (not extended). We then attach a block of mass m to the spring and release the block. The block stretches the spring as it falls (Figure 1). (a) How fast is the block moving when it has fallen a distance z, ? (b) At what rate does the spring do work on the block at this point? (c) Find • View Available Hint(s) the maximum distance rz that the spring stretches. (d) Will the block remain at the point found in part (c)? W. Vspring = Submit Part D Calculate the work done on the block by any other forces as the block falls an…
A box with mass m = 2.75 kg rests on the top of a table. The coefficient of static friction between the box and the table is μs = 0.71 and the coefficient of kinetic friction is μk = 0.34. Write an expression for Fm the minimum force required to produce movement of the box on the top of the table. Solve numerically for the magnitude of the force Fm in Newtons. Write an expression for a, the box's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) Solve numerically for the acceleration, a in m/s2.
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For the same question what stiffnessk needed so the rod will stop smoothly on horizontal position 3 Answer:
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The system is released from rest with the spring initially stretched 6.0 in. Calculate the velocity v of the cylinder after it has dropped 1.2 in. The spring has a stiffness of 3.8 lb/in. Neglect the mass of the small pulley. k = 3.8 lb/in 85 lb Answer: v= i ft/sec