# How Is A Flywheel Constructed To Maximize Its Rotational Inertia?

Why can't you stand with your heels and back to a wall and then bend over to touch your toes and return to your stand-up position? A vertical line through the center of gravity of your body is in front of the tips of your toes, which is outside your support base. Keeping This In View, How does the tapered rim of a wheel on a railroad train allow one part of the rim to have a greater tangential speed than another part when it is rolling on a track? How does the tapered rim of a wheel on a railroad train allow one part of the rim to have a greater tangential speed than another part when it is rolling on a track? 4. The wide part of the wheel has a greater radius than the narrow part, and hence a greater tangential speed when the wheel rolls. Also, What is the law of inertia for rotating systems in terms of angular momentum? What is the law of inertia for rotating systems in terms of angular momentum? Angular momentum does not change without an applied internal torque. Angular momentum does not change without a change in rotational inertia. ## Similar Questions

### Which is easier to get swinging a baseball bat held at the narrow end or a bat held closer to the massive end?

Which is easier to get swinging: a baseball bat held at the narrow end or a bat held closer to the massive end (choked up)? Also answer for a short bat versus a long bat. A. The easiest is at the narrow end and a short bat.

### How do clockwise and counterclockwise torques relate to each other?

Counterclockwise is the positive rotation direction and clockwise is the negative direction. For example, a torque that rotates an object counterclockwise is a positive torque (see figure 6 below).

### How do clockwise and counterclockwise torques compare when a system is balanced in mechanical equilibrium?

How do clockwise and counterclockwise torques compare when a system is balanced? They are equal in magnitude and opposite in direction.

### How does a skater decrease his or her rotational inertia while spinning?

When a figure skater draws her arms and a leg inward, she reduces the distance between the axis of rotation and some of her mass, reducing her moment of inertia. Since angular momentum is conserved, her rotational velocity must increase to compensate.

### Which varies with radial distance on a rotating turntable?

On a rotating turntable, does tangential speed or rotational speed vary with distance from the center? Rotational speed does not vary with distance. Rotational speeds is the measurement of revolutions per unit of time. Tangential speed depends on radial distance.

### How can gravity be simulated in an orbiting space station quizlet?

Gravity can be simulated in a space station by spinning it. Distinguish between linear momentum and angular momentum. Angular momentum (mvR) is linear momentum (mv) plus radius (R).

### Which has a greater rotational inertia a cylinder about its axis or a sphere about a diameter if the two have the same mass and radius?

Greater. Just as the value for a hoop’s rotational inertia is greater than a solid cylinder’s, the rotational inertia of a hollow sphere would be greater than that of a same-mass solid sphere for the same reason: the mass of the hollow sphere is farther from the center.

### How is rotational inertia defined?

Rotational inertia is a property of any object which can be rotated. It is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis. Rotational inertia plays a similar role in rotational mechanics to mass in linear mechanics.

### How do you find the rotational inertia of a pulley?

In the question, the value of the moment of inertia of the pulley system is given, $I = 3kg – {m^2}$. So the angular acceleration of the system is $\alpha = 3rad/{s^2}$. The moment of inertia is the rotational equivalent of the mass in linear motion. It is the tendency of the body to resist angular acceleration.

### How does the rotational inertia of an object differ for different axes of rotation explain?

An object rotating about an axis tends to keep rotating about that axis. Held closer to the massive end. There is less rotational inertia and therefore less torque is required to make it rotate.

### What quantities does rotational inertia depend on?

Rotational inertia depends both on an object’s mass and how the mass is distributed relative to the axis of rotation.

### When you whirl a can at the end of a string?

When you whirl a can at the end of a string in a circular path, what is the direction of the force that acts on the can? The force is toward the center of the circle.

### How can rotational motion be described using dynamics?

Dynamics for rotational motion is completely analogous to linear or translational dynamics. Dynamics is concerned with force and mass and their effects on motion. For rotational motion, we will find direct analogs to force and mass that behave just as we would expect from our earlier experiences.

### What is rotational equilibrium physics?

Rotational Equilibrium is analogous to translational equilibrium, where the sum of the forces are equal to zero. In rotational equilibrium, the sum of the torques is equal to zero. In other words, there is no net torque on the object.

### How is a flywheel constructed?

Flywheels are typically made of steel and rotate on conventional bearings; these are generally limited to a maximum revolution rate of a few thousand RPM. High energy density flywheels can be made of carbon fiber composites and employ magnetic bearings, enabling them to revolve at speeds up to 60,000 RPM (1 kHz).

### What happens when two torques act equally in opposite directions?

When two torques of equal magnitude act in opposing directions, there is no net torque and no angular acceleration, as you can see in the following video. If zero net torque acts on a system spinning at a constant angular velocity, the system will continue to spin at the same angular velocity.

### What relationship exists between the clockwise and counterclockwise moments of force in equilibrium?

If we take moments of the forces acting in the system about any point in the plane of the forces, then the clockwise moments will equal the anticlockwise moments if the beam is in equilibrium.

### What increases rotational inertia?

By increasing the radius from the axis of rotation, the moment of inertia increases thus slowing down the speed of rotation.

### What happens to her rotational inertia when a figure skater brings in her arms?

When she pulls her arms in, her rotational inertia is reduced. Since there is no external net torque on the ice skater, her angular momentum remains constant because her angular velocity magnitude increases.

### What happens to the rotational inertia of a figure skater when they bring in their arms?

A figure skater spins, with her arms outstretched, with angular velocity of ωi. When she moves her arms close to her body, she spins faster. Her moment of inertia decreases, so her angular velocity must increase to keep the angular momentum constant.

### How is rotational inertia similar to inertia as studied in previous chapters?

What is rotational inertia and how is it similar to inertia as studied in earlier chapter? 5. Rotational inertia is the resistance to a change in rotational motion, which is similar to plane inertia which is a resistance to a change in velocity.

### What happens to arc length as rotation angle increases?

5. For a given object, what happens to the arc length as the angle of rotation increases? The arc length is directly proportional to the angle of rotation, so it increases with the angle of rotation. The arc length is inversely proportional to the angle of rotation, so it decreases with the angle of rotation.

### Why does a tapered cup roll in a circle?

A tapered cup rolls in a curve because the wide part of the cup rolls faster than the narrow part. discover! tapered cup will follow a curved path as it rolls. cup covers more distance as it rotates so its linear speed is greater.

### How does a rotating space station simulate gravity physics?

Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by the spacecraft’s hull that acts as centripetal force.

### How does a rotating space station simulate gravity?

When the station spins, centrifugal force acts to pull the inhabitants to the outside. This process could be used to simulate gravity.