A pair of wedges is used to lift a crate as shown inThe crate weighs 4000 lb, the wedge angle e isFig.18°, and the coefficient of friction is 0.15 at all surfaces. Theweight of the wedges is negligible. DetermineThe force P necessary to insert the wedge.W

Given data: Weight of crate, W = 4000 lb angle of wedge, θ=180 coefficient of friction, μ=0.15…

Answered: A pair of wedges is used to lift a…

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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A solid block A weighing Q kg is resting on a flat floor. A smooth cylinder B weighing Pkg. is placed between the solid A and the vertical wall as shown in fig. The friction between the cylinder, wall and the block A is negligible. The co-efficient of friction between the block A and floor is u. The minimum weight Prequired to disturb the block A is Wall to 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.
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Solve for the required value of the force P to raise the load if (a) the coefficient of static friction between the wedge and the ground is 0.20 in the absence of the rollers, and (b) the rollers exist as can be seen in the picture
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A pair of wedges is used to lift a crate as shown in The crate weighs 4000 lb, the wedge angle e is Fig. 18°, and the coefficient of friction is 0.15 at all surfaces. The weight of the wedges is negligible. Determine The force P necessary to insert the wedge. W