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
The coefficient of friction between the inner pulley and the belt is 1/π. Find the maximum value of W that can be supported without rotating the compound pulley P or slipping the belt on the compound pulley P. Pulley B is frictionless. A 200 lb A W
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
Draw the Free Body Diagram for all the solutions require to answer the given questions.
A 25-kg ladder, 4m long rests on a rough floor and against a vertical wall. The ladder makes an angle of 35o with the horizontal as shown. It starts to slip when a man weighing 75 kg has climbed halfway up. If coefficient of friction at the wall is 0.2, determine the coefficient of friction at the floor.
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
In the figure shown the blocks weighs 400 N each. It is held in the positionby a belt that passes over a fixed wheel , the belt being subjected to a horizontal force P at its end. The coefficient of friction between blocks and the inclined plane is 0.20 and 0.25 between the belt and the wheel. Calculate the ff:a. Magnitude of P in N when the block is at impending motion up the plane.b. Tension in the belt near the block in newtons.c. Contact angle between the wheels and the blocks.
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)
Thank youu so much <3
1. Two blocks respectively A weighs 1800N and B weighs 2500N are connected by a spring both rests on an inclined plane downward to the right at a slope of 3 vertical to 4 horizontal. Their motion is down to the incline and resisted by a force P = 1000N. Their coefficient of friction is 0.30 under A and 0.10 under B. Compute the force in the spring.
Q1) Yousif pushes toward the right on an 11.0 N force on the box in the opposite direction. The magnitude of the kinetic friction force between the box and the very smooth floor is 4.50 N as the box slides toward the right. Also, the magnitude of the normal force is 98 N. For the above information, find the following? a box with a force of magnitude 31.0 N. Sarah applies 6. The free-body diagram 7. The mass of the box 8. The box's acceleration in the x-direction 9. The box's acceleration in the y-direction 10. coefficient of dynamic friction Q 2) A rope pulls the block up the ramp, as shown in the figure. Find the following: 7. Draw a free body diagram for the block. 8. Write the equation that sums the forces on the block that are parallel to the ramp. 9. Write the equation that sums the forces on the block that are perpendicular to the ramp. 10. What is the acceleration of the block perpendicular to the ramp? 11. What is the friction force? a = 4.3 m/s? T = N A = 0.45 6.0 kg 0= 30°…

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