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Chapter 11: Q4Q (page 458)

Give examples of translational angular momentum and rotational angular momentum in our Solar System.

Short Answer

Expert verified

The example of translational angular momentum and rotational angular momentum is rotation of earth around the sun.

Step by step solution

01

Definition of Angular momentum and rotational angular momentum

The rotating inertia of an object or system of objects in motion about an axis that may or may not pass through the object or system is described by angular momentum.

The rotating analog of linear momentum is angular momentum (also known as moment of momentum or rotational momentum). A closed system's total angular momentum remains constant.

02

The diagram shows the rotation of earth around the sun

Draw the diagram which shows the rotation of Earth around the Sun.

03

Explain the diagram

The angular momentum of the earth due to rotation on its own axis is an example of rotational angular momentum in our solar system (relative to the centre of mass of the earth).

As a result, the angular momentum of the earth in relation to the location of the Sun serves as an example of translational angular momentum.

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Most popular questions from this chapter

A uniform-density wheel of mass and radius rotates on a low-friction axle. Starting from rest, a string wrapped around the edge exerts a constant force of 15Nfor0.6s (a) what is the final angular speed? (b) what is the average angular speed? (c) Through how big an angle did the wheel turn? (d) How much string come off the wheel?

An ice skater whirls with her arms and one leg stuck out as shown on the left in Figure 11.93, making one complete turn inThen she quickly moves her arms up above her head and pulls her leg in as shown at the right in Figure 11.93.

(a) Estimate how long it now takes for her to make one complete turn. Explain your calculations, and state clearly what approximations and estimates you make. (b) Estimate the minimum amount of chemical energy she must expended to change her configuration.

At a particular instant the location of an object relative to location \(A\) is given by the vector \({\overrightarrow r _A} = \left\langle {6,6,0} \right\rangle {\rm{m}}\). At this instant the momentum of the object is \(\overrightarrow p = \left\langle { - 11,13,0} \right\rangle {\rm{kg}} \cdot {\rm{m}}/{\rm{s}}.\) What is the angular momentum of the object about location \(A\)?

If an object has a moment of inertia \(19\,\,{\rm{kg}} \cdot {{\rm{m}}^{\rm{2}}}\) and the magnitude of its rotational angular momentum is \(36\,\,\,{\rm{kg}} \cdot {{\rm{m}}^{\rm{2}}}{\rm{/s}},\) what is its rotational kinetic energy?

If you did not already do problem P63 do it now. Also calculate numerically the angle through which the apparatus turns, in radians and degrees.
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