The plunger of a door latch is held in place by aspring as shown in Fig.plunger may be ignored. If a force of 2 lb is required to juststart closing the door and the coefficient of friction betweenthe plunger and the striker plate is 0.25, determine the forceexerted on the plunger by the spring.Friction on the sides of the2 lb50°

Answered: Image /qna-images/answer/4519d717-b783-4655-9e65-899da8b3d6ed.jpg

Answered: The plunger of a door latch is held in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Need help please round answers to 3 sig figs. Thanks
Drew is pushing a 12.0-kg box on a floor until he runs into a horizontal spring. The values of force for a few different values of horizontal position x are (x, F): (-2, 10), (-1, 10), (0, 10), (1, 15), (2, 20), (3, 25), (4, 30). a. What is the coefficient of friction? b. What is the work done by Drew's pushing force from x = 0 m to x = 7 m, where x = 0 m corresponds to the initial contact with the spring? c. What fraction of this work goes into heat?
2. The coefficient of static friction between all contacting surfaces is μ = 0.4. The weight of each box is the same, W, and the center of gravity of each box is at its geometric center. a) Determine the minimum horizontal force P needed for the top box to be on the verge of sliding across the top of the lower box (be sure to provide a free body diagram). Is this situation physically possible? b) Determine the minimum horizontal force P needed for both boxes to tip together (be sure to provide a free body diagram). Is this situation physically possible? c) Based on your solutions to parts 'a' and 'b' (no new analysis required), if the magnitude of P is slowly increased from a value of zero, which of these two situations will be realized? 1 m 1 m 0.5 m- [ 1.5 m
While digging a small hole prior to planting a tree, a homeowner encounters rocks. If he exerts a horizontal 199-N force on the prybar as shown, what is the horizontal force exerted on rock C? Note that a small ledge on rock C supports a vertical force reaction there. Neglect friction at B. Complete solutions (a) including and (b) excluding the weight of the 23-kg prybar. 199 N 1260 mm 21 190 mm Answers: (a) Including weight, Fc = i N (a) Excluding weight, Fc = i N
A uniform ladder of length 12 mand mass 30 kg rests with one ed on rough horizontal ground and the other end against a smooth vertical wall. The ladder is indined 65°. The coefficient of friction, H, between the ladder and the ground is 0.35. A woman of mass 65 kg is slowly dimbing up the ladder. She wants to know how far up the ladder she can dimb safely. Drawa diagramshowing all the force adting on the ladder when the woman is x metres fromthe foot of the ladder. (a) (b) Find the reaction of the ground on the ladder. (c) Show that the reaction of the wall on the ladder is less than 33.25g By taking moments about the base of the ladder, find how far up th ladder she an dimb safely. (d)
7. Draw a free body diagram of the crate. Also, answer the multiple choice question.
A heavy cask (full of wine!) sits on an inclined plane. It is held in place by a rope that is attached to the cask and to a hook further up the inclined plane (at A). The rope comes off of the cask tangent to the cask. The mass of the cask is 40 kg, and the coefficient of static friction between the inclined plane and the cask is 0.25. What is the maximum value of 0 just before the cask begins to slip? Also, what is the tension in the rope when slipping is impending? Finally, if the inclined plane became icy, and the rope didn't break as the cask slipped, what would be remarkable about the lines of action of the W, N and T force vectors once equilibrium was re-established? 0.70 m 40
The crate pulled by a man as shown weighs 200 N. Supposed that the static friction coefficient between the contact surfaces is 0.25. Determine the following: a.) The value of angle alpha (ᾳ) to obtain the smallest possible value of the pulling force the man exerted so that the crate is on the verge of moving. b.) The smallest value of the pulling force the man exerted, c.) The normal reaction between the contact surfaces (Crate and Horizontal floor).
A 150lb man stands on a 60lb bar to which a cable is fixed at B. The cable passes over two fixed pegs with coefficients of friction indicated. Assume that the arrangement of the pegs permits the cable to contact each peg over a total angle of 90-degrees (90-degrees per peg). Assume that the normal force exerted by the man on the bar acts downward through A. Find the largest force the man can exert on the cable and maintain the bar horizontal.
The uniform rod BC weighs 32.2 lb. The rod is connected to the frame D by a frictionless pin C and a cord AB as shown. Calculate the maximum value of the applied force P for which rod BC will not “rise up”.
Please asap
A horizontal force is exerted on a 150 lb chair at rest. The coefficient of static friction between the chair and the floor is 0.55. Determine the maximum horizontal force that can be applied to the chair before it moves.

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