Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Two structural members B and C are bolted to bracket A . Knowing that both members are in tension and that P= 10 kN and Q= 15 kN, determine graphically the magnitude and direction of the resultant force exerted on the bracket using (a) the parallelogram law, (b) the triangle rule.
a thin horizontal bar AB of negligible weight and length L is hinged to a vertical wall at A and supported at B by a thin wire BC that makes an angle u with the horizontal. A block of weight W can be moved anywhere along the bar; its position is defined by the distance x from the wall to its center of mass. As a function of x, find (a) the tension in the wire, and the (b) horizontal and (c) vertical components of the force on the bar from the hinge at A.
A uniform cube of side length 7.3 cm rests on a horizontal floor. The coefficient of static friction between cube and floor is u. A
horizontal pullP is applied perpendicular to one of the vertical faces of the cube, at a distance 6.5 cm above the floor on the vertical
midline of the cube face. The magnitude of P is gradually increased. (a) If µ is less than what value will the cube eventually begin to
slide? (b) If u is greater than what value will the cube eventually begin to tip? (Hint: At the onset of tipping, where is the normal force
located?)
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Chapter 5 Solutions
Physics for Scientists and Engineers
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- a 600 N block rests of a 30 degrees plane. if the coefficient of friction is 0.20 , what is the value of the force, P applied horizontally to keep the block moving up the planearrow_forwardAF = 1 kN force is applied on steel pipes in -z axis direction. According to connection coordinates of the pipes AD, BD, and CD, please find the forces that are coming to each pipe. 1 kN T100 AD, CD (Coordinates in mm) BD A(230,-380,0) ċ(-449, 240, a) 8(500, 400, 0) ANSWERS T, (N) Tep(V)arrow_forwardA woman who weighs 533 N is leaning against a smooth vertical wall, as the drawing shows. Find (a) the magnitude of the force N (directed perpendicular to the wall) exerted on her shoulders by the wall and the (b) horizontal and (c) vertical components of the force exerted on her shoes by the ground. (a) Number i (b) Number i (c) Number i Units Units Units 1.10 m $60.01 0.400 marrow_forward
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- A uniform straight bar 2.00 m long and weighing 450 N is supported by two cables at its ends to the roof of a house. Cable 1 on the left end can withstand a maximum tension of 600 N without breaking, while Cable 2 on the right end can withstand a maximum tension of 500 N.You want to put additional weight on that bar. Calculate: (a) What is the maximum weight you can place on the bar without breaking any of the cables? (b) Where should you place this weight on the bar?arrow_forwardA cable stretched between the fixed supports A and B is under a tension T of 1.6 kN. Express the tension as a vector using the unit vectors i and j, first, as a force TA acting on A and second, as a force Tg acting on B. 460 mm А y 340 mm Answers: TA = ( b) kN i+ Tg = ( b) kNarrow_forwardThe building slab is subjected to four parallel column loadings. Take F1=4 kN , and F2=5 kN Determine the magnitude of the equivalent resultant force. Specify the location (x,y)(x,y) on the slab of the equivalent resultant force.arrow_forward
- The base of an automobile jackstand forms an equilateral triangle of side length 13 in. and is centered under the collar A. Model the structure as one with a ball and socket at each joint and determine the force in members BC, BD, and CD. The forces are positive if in tension, negative if in compression. Neglect any horizontal reaction components under the feet B, C, and D.Assume F = 780 lb, b = 13 in., h = 20 in.arrow_forwardThe coefficient of static friction between a block of mass m and an incline is = 0•3. (a) What can be the maximum angle e of the incline with the horizontal so that the block does not slip on the plane ? (b) If the incline makes an angle 8/2 with the horizontal, find the frictional force on the block.arrow_forward(a) A student stands a distance d = 0.425 m from the left end of a platform as shown in the figure. The platform is supported by three lines. Find the tension in each line (in N). Assume the platform is uniform, with length L = 2.00 m and mass 26.0 kg, and the weight of the student is 695 N. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) 140.0° 2.00 m (b) What If? The student now begins to walk to the right. If each of the lines can support a maximum tension of 750 N, which line fails first? O line 1 O line 2 line 3 At what location does this occur (measured in m from the left end of the platform)? marrow_forward
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