Why can't I use the sum of force(about y axis) =0 at point P? I used...

Why can't I use the sum of force(about y axis) =0 at point P? I used this method to get the tension in the cord at first of solution, but gotten wrong answer.

http://www.chegg.com/homework-help/mechanics-of-materials-8th-edition-chapter-1-problem-6p-solution-9780136022305?trackid=1b3aa2d6&strackid=4d3f9551&ii=1

Solutions

Expert Solution

you can't apply sum of force(about y axis) =0 to findout Tension in the cord (T) because tension T on the given frame acts horizontally so if you apply sum of force(about y axis) =0 then only Ay and P=8KN came into the picture in that Ay acting upward and P=8kN acting on downward side so Ay=8KN

If you want to find tension in the cord then apply moment about A is zero (or) take moment about P =0 then

T(0.6)+Ay(2.25)=0

T(0.6)=8(2.25)

T=30KN

So here getting same answer only

please find the detailed solution if you have any doubt feel free to comment.

samet mamat answered 1 year ago

Next > < Previous

Related Solutions

If a function f(x) is odd about a point, say (a,0), on the x-axis what exactly...

If a function f(x) is odd about a point, say (a,0), on the x-axis what exactly does this mean? How would you relate f(x values to left of a) to f(x values to right of a)? Similarly, if a function f(x) is even about a point, say (a,0), on the x-axis what exactly does this mean? How would you relate f(x values to left of a) to f(x values to right of a)? I understand what is meant by odd...

If the infinite curve y = e−3x, x ≥ 0, is rotated about the x-axis, find...

If the infinite curve y = e−3x, x ≥ 0, is rotated about the x-axis, find the area of the resulting surface. (answer needs to be in fraction form if possible)

1. In "magnetic force on a current carrying wire" experiment, using the data for force(y-axis, in...

1. In "magnetic force on a current carrying wire" experiment, using the data for force(y-axis, in Newton) versus length (in meters), someone obtained a linear curve fit equation: y=0.1x+2. If in the experiment, the wire carrying a current I=2.0 A, how strong is the magnetic field? A. 0.1 T B. 0.05 T C. 2 T D. 0.2 T 2. If the distance between the object and the screen is 1meter, a thin lens is put in between and moving, when...

What is the direction of the magnetic field at point P in the figure? (P is on the axis of the coil.)

What is the upper limit of the PDF y-axis? CDF y-axis? I think it is infinity...

What is the upper limit of the PDF y-axis? CDF y-axis? I think it is infinity and 1 but I want to double check. Please also explain conceptually why this is the case. I know the area under the curve of PDF = CDF.

I can't understand the difference between 'the work the electric force does' and 'the work the...

I can't understand the difference between 'the work the electric force does' and 'the work the electric field does'. Could you explain it in detail?

Find electric field intensity E at P(0, 0, 1): (i) a point charge Q = 4πε0...

Find electric field intensity E at P(0, 0, 1): (i) a point charge Q = 4πε0 C at the origin; (ii) a line charge distribution with ρL = 2πε0 C/m on the x-axis with x ranging from -1 to +1 m.; (iii) a square surface charge distribution with ρS = 2ε0 C/m2 on the z = 0 plane with x and y both ranging from -1 to +1 m.; and (iv) a circular surface charge distribution with ρS = 2ε0...

Two point charges are fixed on the y axis: a negative point charge q1 = -30...

Two point charges are fixed on the y axis: a negative point charge q1 = -30 μC at y1 = +0.22 m and a positive point charge q2 at y2 = +0.37 m. A third point charge q = +9.8 μC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 20 N and points in the +y direction. Determine the magnitude of q2.

(1 point) Find yy as a function of xx if y‴+9y′=0,y‴+9y′=0, y(0)=−2, y′(0)=24, y″(0)=−18.y(0)=−2, y′(0)=24, y″(0)=−18. y(x)= ?

Three point charges are placed on the y-axis, a charge q at y=a, a charge -2q...

Three point charges are placed on the y-axis, a charge q at y=a, a charge -2q at the origin and a charge q at y=-a. Such an arrangement is called an electric quadrupole. (a) Find the magnitude and direction of the electric field at points on the positive x-axis. (b)What would be the force exerted by these three charges on a fourth charge 2q placed at (b,0). Explain the steps along the way and thought process behind solving.

Subjects