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Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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If blocks A and B has the total mass of 250 grams with a ratio (A:B) of 2:3, what will be the smallest force F needed to cause motion of block B if P=300 N? Let the static friction of the surfaces between A & B and B & C will be 0.25 and the surfaces between the ropes and pegs D & E be 0.35.
A 10-lb force is pushing the 40-lb block as shown. The incline angle of the plane is α=40º . The coefficient of static friction between the block and the incline is μs = 0.75 and the coefficient of kinetic friction is μk = 0.65. Will the block slide on the plane? If it does, will it slide up or down the plane? What is the friction force between the block and the plane?
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Solve for the force P required to imprend motion in the following situation: 1. If force applied to block horizontally. 2. If force applied to block downward at 30° with the horizontal. 3. What should be the minimum force P and its angle from the horizontal is required to start motion?
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The hoisting arrangement for lifting a large pipe is shown in the figure SD-05Q002. The spreader is a steel tubular section with outer diameter 75 mm and inner diameter 60 mm. Its length is 2.5 m and its modulus of elasticity is 200 GPa. What is the maximum weight of pipe, in kN, that can be lifted based on the following conditions? (Assume pinned conditions at the ends of the spreader.) Use: V = 3 H = 4 Problem 7 Based upon a factor of safety of 2.0 with respect to Euler buckling of the spreader. a. 205 b. 434 c. 355 d. 217 Problem 8 Based upon the allowable stress design if Fy = 248 MPa. a. 205 b. 434 c. 355 d. 217 Problem 9 Based upon the critical stress. a. 205 b. 434 c. 355 d. 217
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Flat plate of area 106 mm2 is pulled with a speed of 0.4 m/s. relative to another plate located at a distance of 0.1 mm from d. Find force and power (consider Dynamic viscosity = 2 poise)
problem 9
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A 130-lb cabinet is mounted on casters that can be locked to prevent their rotation. The coefficient of static friction between the floor and each caster is 0.30. Consider h = 32 in. 24 in. Determine the magnitude of the force P required to move the cabinet to the right if the casters at B are locked and the casters at A are free to rotate. (You must provide an answer before moving to the next part) If the casters at B are locked and the casters at A are free to rotate, the magnitude of the force required to move the cabinet to the right is Ib+