A ????=2.75m=2.75 kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a ????W=18.5FW=18.5 N horizontal force. Find the magnitude of the tension in the rope and the rope's angle from the vertical. The acceleration due to gravity is ????=9.81g=9.81 m/s2.

Respuesta :

Answer:

tension in the rope  is 22.29 N

angle is 56.06 degree

Explanation:

Given data

mass = 1.27 kg

horizontal force = 18.5 N

acceleration = 9.81 m/s2

to find out

magnitude and the rope angle

solution

we know object is in equilibrium so net force is zero here

so net force at x axis = 0  that mean F - Tsinθ = 0 , F = Tsinθ

and net force at y axis = 0 that is T cosθ - mg = 0 ,  T cosθ = mg

in equilibrium  condition

F / mg  = Tsinθ / T cosθ

18.5/ 1.27× 9.81 = sinθ /  cosθ

so θ = tan^-1 (1.4859)

θ = 56.06 degree

angle is 56.06 degree

so F = Tsinθ

18.5 = T sin(56.06)

T = 18.5 / 0.8296

tension in the rope  is 22.29 N

Answer:

1) Tension in rope = 32.71 Newton's

2)[tex]\theta = 34.44^{o}[/tex]

Explanation:

The system at equilibrium is shown in the attached diagram

For exulibrium in x dirextion we have

[tex]\sum F_{x}=0\\\\\therefore 18.5-Tsin(\theta )=0\\\\Tsin(\theta )=18.5.....(i)\\Also\sum F_{y}=0\\\\\therefore Tcos(\theta )-mg=0\\\\Tcos(\theta )=mg....(ii)[/tex]

Dividing equation i and ii we get

[tex]tan(\theta )=\frac{18.5}{mg}\\\\\therefore \theta =tan^{-1}(\frac{18.5}{2.75\times 9.81})\\\\\theta = 34.44^{o}[/tex]

Thus using this angle of inclination we get

[tex]T=\frac{18.5}{sin(34.44)}=32.71N[/tex]

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