Q26P In Problems 17 to 30, for the cu... [FREE SOLUTION]

Chapter 5: Q26P (page 257)

In Problems 17 to 30, for the curve $y = \sqrt{x}$ , between $x = 0$ $x = 2$ and, find:
The moments of inertia of a wire bent along the arc of the curve.

Short Answer

Expert verified

The moments of inertia of a wire bent along the arc of the curve is $\frac{2}{3} M$ .

Step by step solution

Definition of Moment of inertia of circular ring

The moment of inertia of a circular ring along an axis perpendicular to its plane and passing through its center is given as follows,

$l = {Mr}^{2} = (2 蟺谤位) r^{2}$

Here, $位$ is the mass per unit length.

Determination of inertia along an axis perpendicular to its plane

Determine the value of moment of inertia of circular lamina by taking the sum of the rings.

$l = {鈭�}_{0}^{R} r^{2} (2 蟺谤未诲谤) = 2 蟺未 {鈭�}_{0}^{R} r^{3} dr = \frac{蟺}{2} {未搁}^{4} = \frac{{MR}^{4}}{2}$

Here, $未$ is mass per unit area and the value of mass is $M = 未 R^{2} 蟺$ .

Determination of moment of inertia

Find the value of $d l$ and $d M$ .

$d l = \frac{d M {(f (x))}^{2}}{2} d M = p d x {(f (x))}^{2} 蟺$

Take sum of the moment of inertia.

$l = {鈭�}_{0}^{2} \frac{1}{2} p 蟺 {(f (x))}^{2} dx = \frac{p 蟺}{6} x^{3} = {\frac{p 蟺}{6} x^{3}}_{0}^{2} = \frac{4}{3} p 蟺$

Write the expression for the mass of the volume.

$M = V p = 2 蟺辫$

Thus, the moment of inertia of a wire bent along the arc of the curve is $\frac{2}{3} M$ .

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91影视

In Problems 17 to 30, for the curve $y = \sqrt{x}$ , between $x = 0$ $x = 2$ and, find:
The moments of inertia of a wire bent along the arc of the curve.

Short Answer

Step by step solution

Definition of Moment of inertia of circular ring

Determination of inertia along an axis perpendicular to its plane

Determination of moment of inertia

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Further Mechanics and Thermal Physics

Quantum Physics

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Magnetism and Electromagnetic Induction

Study anywhere. Anytime. Across all devices.

91影视

In Problems 17 to 30, for the curve y=x, between x=0x=2and, find:The moments of inertia of a wire bent along the arc of the curve.

Short Answer

Step by step solution

Definition of Moment of inertia of circular ring

Determination of inertia along an axis perpendicular to its plane

Determination of moment of inertia

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Further Mechanics and Thermal Physics

Quantum Physics

Electrostatics

Mechanics and Materials

Measurements

Magnetism and Electromagnetic Induction

Study anywhere. Anytime. Across all devices.

In Problems 17 to 30, for the curve $y = \sqrt{x}$ , between $x = 0$ $x = 2$ and, find:
The moments of inertia of a wire bent along the arc of the curve.