A solid, uniform disk of mass M and radius a may be rotated about any axis parallel to the disk axis, at variable distances from the center of the disk. ( Figure 1) Figure 1 of 1 > ▾ Part A What is Icm, the moment of inertia of the disk around its center of mass? You should know this formula well. Express your answer in terms of given variables. Icm= Submit Part B T (d) = Submit Part C ΤΕΙ ΑΣΦ If you use this disk as a pendulum bob, what is T (d), the period of the pendulum, if the axis is a distance d' from the center of mass of the disk? Express the period of the pendulum in terms of given variables. ▸ View Available Hint(s) Submit Request Answer 197) ΑΣΦΑ O maximum O minimum 3 Provide Feedback Part D Complete previous part(s) O The period of the pendulum has an extremum (a local maximum or a local minimum) for some value of d between zero and infinity. Is it a local maximum or a local minimum? ▸ View Available Hint(s) ? ? Ne
Angular Momentum
The momentum of an object is given by multiplying its mass and velocity. Momentum is a property of any object that moves with mass. The only difference between angular momentum and linear momentum is that angular momentum deals with moving or spinning objects. A moving particle's linear momentum can be thought of as a measure of its linear motion. The force is proportional to the rate of change of linear momentum. Angular momentum is always directly proportional to mass. In rotational motion, the concept of angular momentum is often used. Since it is a conserved quantity—the total angular momentum of a closed system remains constant—it is a significant quantity in physics. To understand the concept of angular momentum first we need to understand a rigid body and its movement, a position vector that is used to specify the position of particles in space. A rigid body possesses motion it may be linear or rotational. Rotational motion plays important role in angular momentum.
Moment of a Force
The idea of moments is an important concept in physics. It arises from the fact that distance often plays an important part in the interaction of, or in determining the impact of forces on bodies. Moments are often described by their order [first, second, or higher order] based on the power to which the distance has to be raised to understand the phenomenon. Of particular note are the second-order moment of mass (Moment of Inertia) and moments of force.
![A solid, uniform disk of mass M and radius a may be rotated about any axis
parallel to the disk axis, at variable distances from the center of the disk. (
Figure 1)
Figure
a
‒‒‒‒‒‒
1 of 1
Part A
What is Icm, the moment of inertia of the disk around its center of mass? You should know this formula well.
Express your answer in terms of given variables.
V— ΑΣΦ
Icm =
Submit
Part B
T (d) =
If you use this disk as a pendulum bob, what is T (d), the period of the pendulum, if the axis is a distance d from the center of mass of the disk?
Express the period of the pendulum in terms of given variables.
► View Available Hint(s)
Submit
Part C
Request Answer
maximum
minimum
Submit
The period of the pendulum has an extremum (a local maximum or a local minimum) for some value of d between zero and infinity. Is it a local maximum or a local minimum?
► View Available Hint(s)
ΑΣΦ
Provide Feedback
wwwww.. ?
Part D Complete previous part(s)
?
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