PROBLEM 5: The upper block is attached to the ground as shown in thefigure by a short rope. The coefficient of friction between the blocks is0.25 while the angle of friction between the lower block and thehorizontal ground is 30°. (a) Determine the tension in the rope, in N,when the lower block is about to move. (b) Determine friction force, inN, under the 900 N block when it is about to move. (c) Determine thehorizontal force P, in N, required to initiate motion.300 NP900 N30°

The objective of this question is to determine the tension in the rope, the friction force under the…

Answered: PROBLEM 5: The upper block is attached…

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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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.
Subject: Statics of Rigid Bodies
(a) A body of weight 45 N is placed on a rough horizontal plane. To just move the body on the horizontal plane, a push of 30 N inclined at 11° to the horizontal plane is required. Find the coefficient of friction. (b) Determine the number of members in a structure, if the total number of joints in the structure is 6.
A solid strut attached to each block is a frictionless pin that connects the two blocks. If the coefficient of friction under each block is 0.25 and B weighs 2700 N, find the minimum weight of A to prevent motion. See the below figure for further illustration.
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).
3. For the figure shown below, if the coefficient of friction at the wall is 0.3, determine the coefficient of friction at the floor. Nw 3m 80kg Nw- Normal force at the wall Fw-Frictional force at the wall N,- Normal force at the wall F,-Frictional force at the wall 3m 30kg FF. NF 40°
An arrangement of three boxes is shown in figure below. Box A weighs 25 N and rests on an inclined plane, while box B weighs 50 N and rests on a horizontal plane. The coefficient of friction between box A and the inclined plane is 0.3, and between box B and the horizontal plane is 0.4. The pulleys are all frictionless. Determine the range of weight of box C for which no motion will occur. Consider both sliding and tipping of boxes A and B. 0.6 m 0.75 m 25 N 5 A 4 C pome 0.8 m 0.6 m 50 N B 1.2 m
A 260-kg block is resting on a 29 deg inclined plane with a coefficient of friction = 0.68. Find the required horizontal force P (kN) that is necessary to start the block UP the incline.
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.
(a) A body of weight 45 N is placed on a rough horizontal plane. To just move the body on the horizontal plane, a push of 25 N inclined at 11° to the horizontal plane is required. Find the coefficient of friction. (b) Determine the number of members in a structure, if the total number of joints in the structure is 3. Enter your student ID in the box and upload your handwritten answers in the separate link provided.
1- A 60 Ib box is held on a smooth incline by a rope passing over the surface of contact with the coefficients of static friction of 0.25. Find (a) the tension on the rope and (b) the magnitude and location of the normal force exerted on the box by the plane. 40° 15 in. 60 Ib 12 in. 30°
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